EEF-CVE-2026-66296 Reflected XSS in oaskit's default HTML error handler

Summary Improper Neutralization of Input During Web Page Generation XSS vulnerability in lud oaskit allows reflected cross-site scripting via the default HTML error handler. Oaskit.ErrorHandler.Default.formatreason/4 and Oaskit.ErrorHandler.Default.reasontohtml/1 in...

EEF-CVE-2026-55734 guardian atom exhaustion in Guardian.Permissions.encode_permissions!/1

Summary Allocation of Resources Without Limits or Throttling vulnerability in ueberauth guardian Guardian.Permissions module allows a denial of service via BEAM atom-table exhaustion. This vulnerability is associated with program file lib/guardian/permissions.ex and program routines...

EEF-CVE-2026-55733 Atom-table exhaustion denial of service in Guardian permissions AtomEncoding via unbounded atom creation

Summary Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of service via unbounded atom creation from attacker-controlled binary input. Guardian.Permissions.AtomEncoding encodes permission scopes by passing arbitrary binaries to String.to\atom/1. When encode...

EEF-CVE-2026-55735 Guardian.revoke/3 acts on unverified token claims, allowing forged-token session revocation

Summary Improper Verification of Cryptographic Signature in ueberauth guardian allows an unauthenticated attacker to revoke a victim's session with a forged token. Guardian.revoke/3 in lib/guardian.ex decodes the supplied token with peek/1, which performs no signature verification it only...

EEF-CVE-2026-54894 Atom-table exhaustion denial of service in Guardian via unbounded atom creation from binary keys

Summary Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of service via unbounded atom creation from attacker-influenced binary input. Guardian.Plug.Keys derives connection and session namespace keys by passing arbitrary binaries to String.to\atom/1...

EEF-CVE-2026-65636 YAML injection via unescaped newlines in ymlr document comments

Summary Improper Neutralization of CRLF Sequences vulnerability in ufirstgroup ymlr Elixir.Ymlr module allows attackers to inject arbitrary content into generated YAML documents through document comments. Ymlr.document!/2 interpolates each caller-supplied comment string into the output behind a...

EEF-CVE-2026-53431 Boruta accepts expired JWT client assertions due to missing exp claim validation

Summary Authentication Bypass by Capture-replay vulnerability in malach-it Boruta allows an attacker who has obtained a previously valid JWT client assertion to authenticate as the issuing OAuth client after the assertion has expired. Boruta accepts JWT-based client authentication client\secret\j...

EEF-CVE-2026-65635 Boruta dynamic client registration allows creation of over-privileged OAuth clients

Summary Improper Isolation or Compartmentalization vulnerability in malach-it boruta Elixir.Boruta.Openid module allows attackers to register OpenID Connect clients with administrative privileges through the dynamic client registration entry point. Boruta.Openid.register\client/3 forwards...

EEF-CVE-2026-54885 Server-side request forgery in Boruta OAuth request_uri and OpenID jwks_uri fetching

Summary Server-Side Request Forgery vulnerability in malach-it Boruta allows an unauthenticated remote attacker to cause the OAuth/OpenID authorization server to issue outbound HTTP requests to attacker-chosen URIs, including internal services and cloud metadata endpoints. Three code paths fetch...

EEF-CVE-2026-59247 Insufficient verification of Hex package metadata in Gleam

Summary Insufficient Verification of Data Authenticity vulnerability in Gleam allows an adversary in the middle to substitute forged Hex package contents during dependency resolution. During dependency resolution Gleam fetches package metadata from the signature-verified Hex repository, which...

EEF-CVE-2026-65624 Cowboy HTTP/1.1 max_headers Bypass via Duplicate Header Names Enables Memory Exhaustion

Summary Allocation of Resources Without Limits or Throttling vulnerability in ninenines cowboy allows an unauthenticated remote attacker to exhaust connection process memory over HTTP/1.1. The HTTP/1.1 handler in cowboy\http enforces the max\headers limit by counting the number of distinct header...

EEF-CVE-2026-59248 Unbounded HPACK/QPACK prefixed-integer decoding in Cowlib causes memory-exhaustion DoS

Summary Allocation of resources without limits vulnerability in ninenines cowlib allows an unauthenticated remote HTTP/2 or HTTP/3 peer to exhaust memory on the vulnerable server or client and cause a denial of service. The HPACK and QPACK prefixed-integer decoder cow\hpack\common:dec\big\int/3 i...

EEF-CVE-2026-54890 BEAM VM crash via integer underflow in binary_to_term BIT_BINARY_EXT decoding

Summary Integer Underflow Wrap or Wraparound vulnerability in erlang otp erlang/otp erts modules, erlang otp erts erts modules allows Forced Integer Overflow, Excessive Allocation. This vulnerability is associated with program files erts/emulator/beam/external.c, emulator/beam/external.c. The...

EEF-CVE-2026-59251 Denial of service via exponential certificate policy tree growth in path validation

Summary Allocation of resources without limits in Erlang/OTP public\key certificate path validation allows a remote unauthenticated attacker to cause denial of service by sending a crafted X.509 certificate chain during the TLS handshake. During RFC 5280 policy processing in...

EEF-CVE-2026-59250 Megaco flex scanner buffer overflow via oversized property parm name

Summary Classic buffer overflow in the Erlang/OTP megaco flex scanner C driver allows a remote unauthenticated attacker to corrupt the driver's memory and potentially achieve remote code execution or a denial-of-service crash by sending a single text-encoded H.248/Megaco message containing an...

EEF-CVE-2026-55953 TLS 1.2 and DTLS client accepts unoffered anonymous cipher suite, bypassing server authentication

Summary The Erlang/OTP ssl TLS 1.2 and earlier and DTLS client does not verify that the cipher suite selected by the server in ServerHello was among the suites offered by the client in ClientHello. The client-side tlshandshake:hello/5 handler validates the negotiated protocol version and the...

EEF-CVE-2026-55737 Heap pointer corruption via signed/unsigned mismatch in LARGE_TUPLE_EXT decoding in erts external term format decoder

Summary Signed to Unsigned Conversion Error and Out-of-bounds Write vulnerability in Erlang OTP erts allows an attacker who can supply a crafted Erlang external term format ETF binary to binary\to\term/1 to corrupt the BEAM heap pointer and crash the virtual machine. When decoding a LARGE\TUPLE\E...

EEF-CVE-2026-47078 Relative path traversal in zip:unzip/zip:extract via check_dir_level depth-counter bypass

Summary Relative Path Traversal vulnerability in Erlang OTP stdlib zip module allows writing files outside the intended extraction directory via a crafted zip archive. zip:unzip/1,2 and zip:extract/1,2 validate entry paths using zip:checkdirlevel/2, which tracks directory depth as a running integ...

EEF-CVE-2026-42792 epmd permanent DoS via EMFILE on accept(2) in erts

Summary Improper Handling of Exceptional Conditions vulnerability in Erlang OTP erts epmd allows an unauthenticated remote attacker to permanently terminate the Erlang Port Mapper Daemon epmd via connection slot exhaustion. The do\accept function in erts/epmd/src/epmd\srv.c calls epmd\cleanup\exi...

EEF-CVE-2026-58227 TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain

Summary The Erlang/OTP ssl application does not detect cycles when reconstructing an incomplete peer certificate chain during a TLS or DTLS handshake. In ssl\certificate:handle\incomplete\chain/5, the received chain is passed to ssl\certificate:build\certificate\chain/5, which walks issuer...

EEF-CVE-2026-65623 Quadratic CPU blow-up reassembling fragmented WebSocket messages in Bandit

Summary Inefficient Algorithmic Complexity vulnerability in mtrudel bandit allows unauthenticated remote denial of service via CPU exhaustion during WebSocket fragment reassembly. The size guard 'Elixir.Bandit.WebSocket.Connection':oversize\message?/2 called from handle\frame/3 in...

EEF-CVE-2026-59252 Missing gas_limit validation in mpp Tempo fee-payer enables wallet drain

Summary Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet, resulting in denial of service for legitimate clients. When the mpp Elixir library is configured as fee payer fee\payer: true, the MPP.Methods.Tempo...

EEF-CVE-2026-59694 Unbounded access list in mpp Tempo fee-payer inflates gas cost per payment

Summary Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to inflate the fee-payer's gas cost per payment by a large multiplier, degrading the sponsor's operating margin. When the mpp Elixir library is configured as fee payer fee\payer: true...

EEF-CVE-2026-59695 Unbounded max_fee_per_gas in mpp Tempo fee-payer enables single-request wallet drain

Summary Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet in a single request by naming an arbitrarily high gas price. When the mpp Elixir library is configured as fee payer fee\payer: true,...

EEF-CVE-2026-59249 Sign-tolerant HTTP/1 chunk-size parser in Mint enables response smuggling against strict intermediaries on pooled connections

Summary Inconsistent interpretation of HTTP requests HTTP response smuggling vulnerability in elixir-mint mint allows a malicious HTTP/1 server to desynchronize a strict intermediary and the Mint client on the same pooled connection, enabling response-queue poisoning against subsequent requests...

EEF-CVE-2026-55954 Missing ID token claim validation in ueberauth_apple allows account takeover

Summary Authentication Bypass by Spoofing vulnerability in ueberauth ueberauth\apple allows account takeover via unvalidated ID token claims. The Ueberauth.Strategy.Apple.Token.payload/2 function verifies the JWT signature of the callback id\token against Apple's JWKS but does not validate any...

EEF-CVE-2026-59246 Zero-length HTTP/2 CONTINUATION frames bypass Mint's header-block byte-size cap and exhaust client memory

Summary Allocation of resources without limits vulnerability in elixir-mint mint allows a remote HTTP/2 server to exhaust memory on the client host and cause a denial of service. The Mint.HTTP2.handle\continuation/3 function in lib/mint/http2.ex accumulates the header-block fragment carried by ea...

EEF-CVE-2026-58229 Unbounded HTTP/1 response-header and chunked-trailer accumulation in Mint causes memory-exhaustion DoS

Summary Allocation of resources without limits vulnerability in elixir-mint mint allows a remote HTTP server to exhaust memory on the client host and cause a denial of service. The Mint.HTTP1.decode\headers/5 and Mint.HTTP1.decode\trailer\headers/4 functions in lib/mint/http1.ex accumulate every...

EEF-CVE-2026-58228 Scheme validation bypass in Phoenix.LiveView.Utils leads to XSS via <.link>

Summary Cross-site scripting vulnerability in phoenixframework phoenix\live\view allows an attacker to bypass URL scheme validation and execute JavaScript in a victim's browser session. The Phoenix.LiveView.Utils.valid\destination!/2 and Phoenix.LiveView.Utils.valid\live\navigation\destination!/2...

EEF-CVE-2026-56813 Cookie attribute injection in Plug.Conn.Cookies.encode/2

Summary Improper Neutralization of Parameter/Argument Delimiters vulnerability in elixir-plug plug allows an attacker to inject or override HTTP cookie attributes. The Plug.Conn.Cookies.encode/2 function in lib/plug/conn/cookies.ex builds the Set-Cookie response header by interpolating the cookie...

EEF-CVE-2026-56814 Plug: multipart :length limit is not charged for part headers, enabling unbounded temp-file creation (denial of service)

Summary Plug.Parsers.MULTIPART, the multipart request-body parser used to handle file uploads and multipart forms, does not enforce its :length budget against all consumed resources, allowing an unauthenticated remote attacker to cause denial of service. The parser charges the :length limit only...

EEF-CVE-2026-58225 SQL injection via unescaped dollar-quote in Postgrex.Notifications reconnect replay causes notification denial of service

Summary SQL Injection vulnerability in elixir-ecto postgrex allows an attacker who can influence a LISTEN channel name to inject SQL into the reconnect replay query, causing a denial of service of the notification connection. Postgrex.Notifications sanitizes channel names with quote\channel/1,...

EEF-CVE-2026-56812 Phoenix JavaScript presence client crashes on presence keys colliding with Object.prototype members in Presence.syncState/syncDiff

Summary Improper Check for Unusual or Exceptional Conditions vulnerability in phoenixframework phoenix Presence JavaScript client allows an attacker with ordinary channel access to cause a persistent client-side denial of service against every viewer of a presence channel topic. This vulnerabilit...

EEF-CVE-2026-56811 Phoenix transports do not limit channel joins per connection, enabling process-exhaustion denial of service

Summary Allocation of Resources Without Limits or Throttling vulnerability in phoenixframework phoenix Phoenix.Socket module allows an unauthenticated attacker to cause a denial of service against any endpoint that mounts a Phoenix socket with a reachable channel transport WebSocket or LongPoll...

EEF-CVE-2026-54893 Email-derived URL path injection in the Swoosh Microsoft Graph adapter

Summary URL path injection in the Microsoft Graph adapter of Swoosh. Swoosh.Adapters.MsGraph builds its Microsoft Graph API request URL by interpolating the sender's email address into the URL path /users/from/sendMail without percent-encoding or validation. In applications that derive the from...

EEF-CVE-2026-56810 mint buffers an entire chunked response chunk in memory in Mint.HTTP1.decode_body/5

Summary Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint mint Mint.HTTP1 module allows a denial of service via an oversized chunked transfer-encoded response. This vulnerability is associated with program files lib/mint/http1.ex and program routines...

EEF-CVE-2026-58226 Unauthenticated denial-of-service via unbounded HPACK integer decoding in hpax

Summary Inefficient Algorithmic Complexity vulnerability in elixir-mint hpax allows unauthenticated denial-of-service via unbounded HPACK integer decoding. hpax decodes HPACK variable-length integers with no upper bound on the decoded value or the number of continuation octets...

EEF-CVE-2026-54891 Plaintext APPLICATION_DATA injected during TLS handshake delivered to client application post-handshake in ssl

Summary Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server...

EEF-CVE-2026-55950 DTLS listener crash via race condition in dtls_packet_demux causes denial of service for all sessions

Summary Time-of-check Time-of-use TOCTOU race condition vulnerability in Erlang/OTP ssl dtls\packet\demux module allows an unauthenticated remote attacker to crash all active DTLS sessions on a listener. A DTLS server listener uses a single shared dtls\packet\demux gen\server process to route...

EEF-CVE-2026-54886 SSH SFTP server denial of service via extended channel data infinite loop

Summary Loop with Unreachable Exit Condition 'Infinite Loop' vulnerability in Erlang OTP ssh ssh\sftpd module allows an authenticated SFTP user to render an SFTP channel permanently unresponsive. The handle\data/4 function in ssh\sftpd contains a catch-all clause that accepts channel data of any...

EEF-CVE-2026-55952 TLS 1.3 server denial of service via malformed ClientHello pre-shared key extension

Summary The Erlang/OTP ssl application does not validate that the PSK identity list and binder list carried in a TLS 1.3 ClientHello pre-shared key extension have equal length before passing them to the session ticket handler. In tls\handshake\1\3:handle\pre\shared\key/3, an OfferedPreSharedKeys...

EEF-CVE-2026-54887 DTLS server cookie bypass during startup window due to empty initial cookie secret

Summary Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtls\server\connection:initial\hello/3 initializes previous\cookie\secret...

EEF-CVE-2026-53422 SFTP REALPATH path-existence oracle allowing filesystem enumeration outside configured root

Summary Observable Response Discrepancy vulnerability in Erlang OTP ssh ssh\sftpd module allows an authenticated SFTP user to enumerate the existence of files and directories outside the configured root directory. The SSH\FXP\REALPATH handler in ssh\sftpd calls relate\file\name/3 with...

EEF-CVE-2026-53426 Atom-table exhaustion denial-of-service via JSON parse_document in MDEx

Summary Allocation of Resources Without Limits or Throttling vulnerability in leandrocp MDEx allows Excessive Allocation. MDEx.parse\document/2 accepts a :json, json source. In lib/mdex.ex, the private json\to\node/1 function passes the attacker-controlled node\type value to Module.concat/1, whic...

EEF-CVE-2026-54889 Unsanitized URL schemes in MDEx Quill Delta output allow javascript: injection (XSS)

Summary Improper Neutralization of Input During Web Page Generation XSS vulnerability in leandrocp mdex allows cross-site scripting via unsanitized URL schemes in Quill Delta output. 'Elixir.MDEx':to\delta/2 converts Markdown into a Quill Delta. 'Elixir.MDEx.DeltaConverter':default\convert\node/3...

EEF-CVE-2026-54888 Uncontrolled recursion over deeply nested Markdown crashes the BEAM in mdex

Summary Uncontrolled Recursion vulnerability in leandrocp mdex allows denial of service via deeply nested Markdown input. mdex converts between an Elixir %MDEx.Document struct and Comrak's internal AST using two mutually recursive Rust functions, ex\document\to\comrak\ast and...

EEF-CVE-2026-53429 Unbounded native memory leak in mdex escaped-tag rendering enables unauthenticated denial of service

Summary Missing Release of Memory after Effective Lifetime vulnerability in leandrocp mdex and mdex\native allows an attacker who controls a rendered document to cause a denial of service through unbounded native memory exhaustion. The native rendering code permanently leaks memory when rendering...

EEF-CVE-2026-53428 Unbounded memory allocation in highlight_lines range expansion in mdex

Summary Memory Allocation with Excessive Size Value vulnerability in leandrocp mdex allows an unauthenticated attacker to cause a denial of service through unbounded memory allocation. comrak\nif::lumis\adapter::LumisAdapter::parse\highlight\lines in native/comrak\nif/src/lumis\adapter.rs eagerly...

EEF-CVE-2026-53427 Cross-site scripting in MDEx via unescaped highlight_lines_class code-fence attribute

Summary Improper Neutralization of Input During Web Page Generation 'Cross-site Scripting' vulnerability in leandrocp MDEx allows stored or reflected cross-site scripting via attacker-controlled Markdown. When syntax highlighting and full info-string forwarding render: \full\info\string: true\ ar...

EEF-CVE-2026-55736 Private action arguments can be set by user input in Ash

Summary Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in ash-project ash allows a user to set the value of a private action argument that is intended to be controlled only by trusted server-side code. Action arguments declared with public?: false are...