curl: HackerOne Vulnerability Report: libcurl SSL/TLS Identity Leakage via Insecure Connection Reuse

Summary libcurl contains a critical logic flaw in its connection reuse mechanism where transfers using the CURLOPTSSLCTXFUNCTION SSL context callback to establish a specific identity e.g., via client certificates can have their connections incorrectly reused by subsequent, unauthenticated transfe...

curl: HTTP/2 PUSH_PROMISE header loss on OOM bypasses scheme validation (regression of 2e8c922a89)

Summary: In lib/http2.c:1490, when curlmaprintf fails due to memory pressure, the push promise header is silently dropped but the callback returns success. If the lost header is the :scheme pseudo-header, the security check at line 733 that blocks HTTPS pushes over insecure connections is skipped...

arkadiyt-projects: Path Traversal in writeFile via Unsafe Prefix Containment Check Allows Out-of-Directory Writes

A path traversal vulnerability was discovered in the protodump tool. The vulnerability allowed an attacker to influence the output filename construction and bypass the containment check, enabling writes outside the intended output directory. The vulnerability was caused by the use of...

arkadiyt-projects: SSRF Filter Bypass via Unblocked NAT64 Local-Use IPv6 Prefix (64:ff9b:1::/48)

A vulnerability was discovered in the ssrffilter library version 1.3.0. The library failed to block the NAT64 local-use IPv6 prefix 64:ff9b:1::/48, allowing such addresses to be treated as public. This enabled SSRF requests through /fetch to targets encoded under that prefix when routable in the...

curl: CRLF Injection in HAProxy PROXY Protocol via CURLOPT_HAPROXY_CLIENT_IP allows IP spoofing and protocol injection

Summary: CURLOPTHAPROXYCLIENTIP introduced in curl 8.2.0 accepts arbitrary strings without any validation or sanitization before injecting them into the HAProxy PROXY protocol v1 header. An attacker who can influence the value passed to this option e.g., through a web application that proxies...

AWS VDP: Sandbox User Can Inject Rogue CA Certificate into OS Trust Store via Sudo-Allowed deploy-certificates.sh

A vulnerability was found in the Bedrock AgentCore Code Interpreter sandbox. The sandbox granted a user passwordless sudo access to a script that deployed certificates to the OS trust store. An attacker could have generated a rogue CA certificate, placed it in a writable directory, and then used...

AWS VDP: Incomplete Input Sanitization in CodeInterpreter install_packages Allows Command Injection via pip Flags

The Bedrock AgentCore Python SDK was found to have an incomplete input sanitization vulnerability in the installpackages method. The sanitization process failed to properly handle certain pip flags, such as --index-url, which allowed arbitrary command execution within the Code Interpreter sandbox...

AWS VDP: Bedrock AgentCore Starter Toolkit Creates Gateway IAM Roles Without Confused Deputy Protections

The Bedrock AgentCore Starter Toolkit was found to create IAM roles for the AgentCore Gateway with trust policies that lacked certain condition keys. This enabled a cross-account confused deputy attack where any AgentCore workload in any AWS account could assume the victim's Gateway role. The rol...

curl: Unbounded GZIP Decompression Leading to Event-Loop Starvation

When libcurl is configured to decompress HTTP responses via CURLOPTACCEPTENCODING or the --compressed CLI flag, it lacks decompression bounds checking or a mechanism to yield execution during massive expansion tasks. If an attacker provides a highly compressed payload zip bomb, libcurl's underlyi...

AWS VDP: Kiro IDE Stores Auth Tokens with World-Readable Permissions (0644)

The Kiro IDE version 0.11.107 wrote authentication tokens access token and refresh token to a file with world-readable permissions 0644. The file contained sensitive information, including the access token, refresh token, and profile ARN. This exposed the credentials to potential unauthorized...

curl: HTTP/2 server push accepts a non-authoritative :scheme=https over cleartext h2c, enabling HTTPS cache-key poisoning

Summary: I found that libcurl 8.19.0 accepts an HTTP/2 pushed stream on a cleartext h2c connection even when the server sends :scheme=https in PUSHPROMISE. In lib/http2.c, settransferurl builds the pushed handle URL from the server-supplied :scheme, :authority, and :path, but PUSHPROMISE validati...

Shopify: admin.shopify.com: Shopify Flow continues sending internal emails to a configured recipient after the staff author is removed

Summary: A staff user removed from a Shopify store continues to receive customer Personally Identifiable Information PII via a previously created automation workflow. The workflow, configured using Shopify Flow, continues executing after the user's access has been revoked and sends sensitive...

curl: Security Vulnerability Report: Protocol Injection via Programmatic Options

Summary Multiple text-based protocol handlers in libcurl including FTP, SMTP, POP3, and IMAP are vulnerable to protocol command injection. This occurs when an application sets credentials or other protocol-specific options programmatically e.g., via CURLOPTUSERNAME, CURLOPTPASSWORD, or...

Node.js: Permission Model bypass via FileHandle.utimes() in the promises API

Vulnerability description not provided...

PortSwigger Web Security: Out of scope: Improper Input Validation Order on /api-internal/login via password field leads to unnecessary resource consumption

A security issue was discovered in the /api-internal/login authentication endpoint of the internal login interface of Burp Suite DAST Enterprise. The issue was caused by improper input validation order, where the application processed user-supplied input before enforcing field-level validation...

Nextcloud: PIN bypass in PassCodeActivity via back button

A vulnerability was discovered in the PassCodeActivity of a certain application. The vulnerability allowed bypassing the PIN code by pressing the back button...

Nextcloud: SSRF via User-Controlled Push proxyServer in Notifications Push Registration

A server-side request forgery vulnerability was discovered in the notifications application version 5.0.0. An authenticated user with low privileges could register a push device with an attacker-controlled proxy server address through the push registration endpoint. When a notification was...

curl: HTTP/1.1 Response Desynchronization via conflicting CL/TE headers in Proxy CONNECT

Summary: curl fails to prioritize the Transfer-Encoding: chunked header over Content-Length in HTTP/1.1 proxy responses specifically 407/401 auth challenges, violating RFC 9112 Section 6.1. I have identified the root cause in cf-h1-proxy.c. In the response-handling loop around line 466, the code...

Cloudflare Public Bug Bounty: HTTP Request Smuggling via Unsanitized Hop-by-Hop Headers

The vulnerability allowed forwarding of HTTP/1 h2c upgrade requests to upstream servers, bypassing request-level filters applied by the proxy. The issue was addressed in Pingora version 0.9.0, which restricted HTTP/1 upgrades to WebSocket by default...

curl: CVE-2026-4873: connection reuse ignores TLS requirement

A vulnerability was discovered in libcurl's connection reuse for cleartext-upgrade mail protocols. The vulnerability was that the later transfer's CURLOPTUSESSL option was not properly included if a plaintext connection was already open and reusable. This affected the smtp://, pop3://, and imap:/...

Monero: ZMQ RPC Log Injection and Untrusted Payload Persistence

A vulnerability was reported in the Monero CLI daemon where the ZMQ RPC request path logs untrusted request content before semantic validation. This allowed a remote party with access to the ZMQ endpoint to inject newline and control-character content into daemon logs, enabling log forging. The...

Monero: Authenticated `unsigned_txset` change spoof lets a malicious hot wallet steal cold-signer change

A vulnerability was discovered in Monero's wallet code that allowed a malicious or compromised hot/watch-only wallet with the victim wallet's private view key to forge an authenticated unsigned transaction. The forged transaction included an attacker-controlled output that was presented as change...

AWS VDP: Health check errors silently dropped when channel buffer full

Component: pkg/plugin/plugin.go:153-156, pkg/plugin/pluginv2.go:156-158 Affected Version: aws-encryption-provider @ 4341c70 all versions Found by: Source audit TLP: TLP:Amber --- Summary When KMS operations fail, the error is sent to a buffered channel healthCheckErrc, size 100 via a non-blocking...

AWS VDP: Encryption context keys and values logged at INFO level

Component: cmd/server/main.go:101-106 Affected Version: aws-encryption-provider @ 4341c70 all versions Found by: Source audit TLP: TLP:Amber --- Summary The server startup code logs all encryption context key-value pairs at INFO level. Encryption context is metadata associated with KMS operations...

AWS VDP: V2Plugin.Decrypt panics on empty ciphertext (Remote DoS)

A vulnerability was discovered in the "aws-encryption-provider" component where the "V2Plugin.Decrypt" function accessed the ciphertext slice without checking if it was empty, leading to a panic and crashing the entire gRPC server process...

AWS VDP: V1Plugin.Decrypt panics on empty ciphertext (Remote DoS)

A vulnerability was discovered in the aws-encryption-provider component of the pkg/plugin/plugin.go file at revision 4341c70. The vulnerability caused the V1Plugin.Decrypt function to panic when passed an empty ciphertext, crashing the entire gRPC server process. This was due to the function...

Monero: Wallet RPC Restricted-Mode Policy Bypass

A vulnerability was discovered in the Monero wallet RPC server that allowed restricted-mode clients to perform non-view-only operations. The issue was caused by inconsistent enforcement of the restricted mode, which allowed clients to bypass the intended view-only access controls and perform...

Monero: Windows installer grants low-privileged users write access to executable P2Pool directory, enabling local code execution

A Windows installer for the Monero GUI wallet created a subdirectory for P2Pool with overly broad write permissions for low-privileged users. The GUI later executed the p2pool.exe binary from that directory without any additional integrity checks, allowing a local attacker to plant malicious code...

DuckDuckGo: RCE + PAT Exfiltration via pull_request_target in privacy-configuration/auto-respond-pr.yml — Direct Supply Chain to All DDG Browsers

A vulnerability was discovered in the "auto-respond-pr.yml" GitHub Actions workflow of the "privacy-configuration" repository. The workflow used the "pullrequesttarget" trigger, which checked out the fork's repository as both the "base" and "PR" branches. This allowed an attacker to control the...

DuckDuckGo: RCE + Supply Chain Attack via pull_request_target in content-scope-scripts/semver-label.yml — Affects All DuckDuckGo Browsers

A vulnerability was discovered in the DuckDuckGo content-scope-scripts repository's GitHub Actions workflow. The workflow used the pullrequesttarget trigger without access controls, allowing untrusted code from fork pull requests to be checked out and executed. This could have led to remote code...

Node.js: Unix domain socket server bypasses --permission network restrictions (incomplete CVE-2026-21636 fix)

Vulnerability description not provided...

Nextcloud: Mail contact autocomplete bypasses administrator-configured user enumeration restrictions and expose member information outside the intended scope

A vulnerability was discovered in the Mail contact autocomplete feature of Nextcloud that allowed an authenticated user to bypass administrator-configured user enumeration restrictions and expose member information outside the intended scope. The vulnerability was present in the...

curl: Function `do_pubkey()` can have out-of-bound read issue

Summary A 1-byte out-of-bounds heap read in dopubkey in lib/vtls/x509asn1.c. When parsing an RSA public key with a zero-length or all-zero modulus, the loop dereferences a pointer before checking bounds. Requires a non-OpenSSL TLS backend e.g., Mbed/Gnu. A certificate chain verification can trigg...

curl: Exposed .git/config File Leading to Potential Sensitive Information Disclosure

Summary: The .git/config file is publicly accessible on the target server, which may expose sensitive repository configuration details. This indicates that the .git directory is improperly exposed, potentially allowing attackers to reconstruct the entire source code repository and extract sensiti...

Rocket.Chat: Unauthenticated file deletion via deleteFileMessage DDP method allows permanent destruction of any uploaded file

Vulnerability description not provided...

curl: Bearer Token Leaked to Attacker via .netrc Despite CVE-2026-3783 Fix

curl versions 8.19.0 and later were meant to fix CVE-2026-3783, which causes OAuth2 bearer tokens to leak on HTTP redirects when the user has a .netrc file configured. However, the vulnerability still exists in the current codebase. VULNERABILITY: When a curl user specifies an OAuth2 bearer token...

Nextcloud: Approval app's file-freshness check can be bypassed by omitting the etag parameter, allowing approval of unreviewed file changes

A vulnerability was discovered in the approval app's file-freshness check. The vulnerability allowed bypassing the check by omitting the etag parameter, enabling approval of unreviewed file changes. This broke the integrity of the approval process, as the approver could approve a different file...

curl: HSTS accepted from HTTP origin behind HTTPS proxy

curl/libcurl appears to accept and persist Strict-Transport-Security from an http:// origin when the request is sent through an https:// proxy. After that, a later http:// request for the same host is automatically upgraded to https:// due to stored HSTS state. Affected versions 8.12.0 through...

phpBB: Blind POST SSRF via Web Push Notification Endpoint

A vulnerability was discovered in phpBB 4.0.0-alpha1 that allowed registered users to register arbitrary URLs as their Web Push notification endpoint. The endpoint URL was stored without validation and later used by the phpBB server to send outbound HTTP POST requests, potentially leading to blin...

curl: Unescaped username in SASL DIGEST-MD5 response allows injection

Summary: The username is inserted into the digest-md5 response without escaping the quotes or backslashes. The HTTP digest path on line 863 in lib/vauth/digest.c uses authdigeststringquoted but the SASL does not line 478. Commit ac419bf sorted the HTTP in 2013. It looks like the SASL was moved in...

Basecamp: DOM XSS in `fizzy.do` import filename preview enables one-click victim account takeover

A DOM XSS vulnerability was discovered in the file import functionality of the Fizzy application. The vulnerability allowed an attacker to craft a malicious filename that, when previewed by the victim user, would inject a second form submission into the import page. This enabled the attacker to...

phpBB: Stored XSS via SVG Upload — check_content() Blocklist Bypass & 256-Byte Scan Limit (Self-Propagating Worm)

A stored XSS vulnerability was discovered in phpBB 4.0.0-a2-dev. The vulnerability was caused by an incomplete blocklist for file uploads and a 256-byte read limit in the content scanning check. Specifically, SVG files with malicious payloads in the onload and onbegin attributes were able to bypa...

LinkedIn: Access to Deactivated LinkedIn Company Pages via Competitor Analytics API

A vulnerability was discovered in LinkedIn's Competitor Analytics API that permitted authenticated users to access analytics data for deactivated company pages...

curl: SMB READ_ANDX DataOffset not validated

Summary: in smbrequeststate case SMBDOWNLOAD curl reads two server-controlled fields from a READANDX response and uses them to decide where in the receive buffer file data starts. c / lib/smb.c / len = Curlread16leconst unsigned char msg + sizeofstruct smbheader + 11; off = Curlread16leconst...

Ruby on Rails: Rails::HTML::Sanitizer.allowed_uri? returns true for entity-encoded control-character-split javascript: URLs

A vulnerability was discovered in the Rails::HTML::Sanitizer.alloweduri? method of the rails-html-sanitizer library. The method incorrectly returned true for entity-encoded control-character-split javascript: URLs, which could lead to potential security issues if the application relied on the...

Monero: Restricted RPC Policy Bypass on ZMQ JSON-RPC Allows Unauthenticated Remote Admin Actions

A high-severity access-control issue was found in Monero's ZMQ JSON-RPC surface. When the daemon is started in restricted/public-node mode, the HTTP RPC layer correctly suppresses admin-only methods, but the ZMQ JSON-RPC layer did not inherit or enforce that restriction. This allowed an...

Nextcloud: Improper input validation in emoji field leads to sidebar UI denial of service

A vulnerability was discovered in the emoji field validation of the page emoji update endpoint. Improper input validation allowed attackers with edit permissions to submit excessively long strings containing newline characters instead of valid emoji characters. This caused the sidebar layout to...

Nextcloud: Arbitrary Board Preference Injection via Deck Config API

A vulnerability was discovered in the Deck Config API of the Nextcloud application that allowed authenticated users to set board-scoped configuration keys for arbitrary board IDs without validating the user's ownership or permission to manage the referenced board...

Lovable VDP: Bypass of Open Redirect Fix on lovable.dev via /..// Path Traversal in redirect parameter

A bypass was discovered for a previously patched open redirect vulnerability on a web application. The original fix blocked certain payloads, but failed to account for path traversal sequences combined with double slashes. By supplying a specific redirect value, an attacker could still redirect...

curl: Curl_compareheader() fails to match multi-value HTTP headers

Summary Curlcompareheader in lib/http.c fails to scan the full value of HTTP headers for substring matches. Due to an incorrect loop condition, only the first byte position of the header value is checked. This causes curl to miss connection options like close when they appear as non-first tokens ...