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

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 tlshandshake13:handlepresharedkey/3, an OfferedPreSharedKeys record with a...

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

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, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

CVE-2026-54887

CVE-2026-54887 concerns Erlang/OTP's DTLS server in ssl, where during startup the cookie secret is initialized to an empty binary instead of a random value. This makes DTLS cookie computation deterministic for the first 0–15 seconds, allowing an observer of plaintext ClientHello to forge a valid ...

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

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, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

CVE-2026-54887

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, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

CVE-2026-53422

Observable Response Discrepancy vulnerability in Erlang OTP ssh sshsftpd module allows an authenticated SFTP user to enumerate the existence of files and directories outside the configured root directory. The SSHFXPREALPATH handler in sshsftpd calls relatefilename/3 with Canonicalize=false, unlik...

CVE-2026-53422

Observable Response Discrepancy vulnerability in Erlang OTP ssh sshsftpd module allows an authenticated SFTP user to enumerate the existence of files and directories outside the configured root directory. The SSHFXPREALPATH handler in sshsftpd calls relatefilename/3 with Canonicalize=false, unlik...

EUVD-2026-41410

Observable Response Discrepancy vulnerability in Erlang OTP ssh sshsftpd module allows an authenticated SFTP user to enumerate the existence of files and directories outside the configured root directory. The SSHFXPREALPATH handler in sshsftpd calls relatefilename/3 with Canonicalize=false, unlik...

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

Observable Response Discrepancy vulnerability in Erlang OTP ssh sshsftpd module allows an authenticated SFTP user to enumerate the existence of files and directories outside the configured root directory. The SSHFXPREALPATH handler in sshsftpd calls relatefilename/3 with Canonicalize=false, unlik...

PT-2026-55271

Name of the Vulnerable Software and Affected Versions Erlang/OTP versions 25.3 through 29.0.2 Erlang/OTP versions 28.x prior to 28.5.0.3 Erlang/OTP versions 27.x prior to 27.3.4.14 ssl versions 10.9 through 11.7.2 ssl versions 11.6.x prior to 11.6.0.3 ssl versions 11.2.x prior to 11.2.12.10...

PT-2026-55269

Name of the Vulnerable Software and Affected Versions Erlang/OTP versions 20.0 through 29.0.2 Erlang/OTP versions 28.0 through 28.5.0.2 Erlang/OTP versions 27.0 through 27.3.4.13 ssl versions 8.2 through 11.7.2 ssl versions 11.6.0 through 11.6.0.2 ssl versions 11.2.0 through 11.2.12.9 Description...

PT-2026-55270

Name of the Vulnerable Software and Affected Versions Erlang/OTP versions 17.0 through 29.0.2 Erlang/OTP versions 28.x prior to 28.5.0.3 Erlang/OTP versions 27.x prior to 27.3.4.14 Description Improper enforcement of message integrity during transmission in the tls gen connection module allows a...

PT-2026-54772

Name of the Vulnerable Software and Affected Versions erlang quic versions prior to 1.4.4 Description The QUIC client fails to authenticate the server during the TLS 1.3 handshake. Specifically, the CertificateVerify signature is not checked, the certificate chain is not validated, and the hostna...

CVE-2026-53426

Allocation of Resources Without Limits or Throttling vulnerability in leandrocp MDEx allows Excessive Allocation. MDEx.parsedocument/2 accepts a :json, json source. In lib/mdex.ex, the private jsontonode/1 function passes the attacker-controlled nodetype value to Module.concat/1, which calls...

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

Allocation of Resources Without Limits or Throttling vulnerability in leandrocp MDEx allows Excessive Allocation. MDEx.parsedocument/2 accepts a :json, json source. In lib/mdex.ex, the private jsontonode/1 function passes the attacker-controlled nodetype value to Module.concat/1, which calls...

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...

PT-2026-53684

Name of the Vulnerable Software and Affected Versions leandrocp MDEx versions 0.4.3 through 0.13.1 Description An excessive allocation issue exists when the MDEx.parse document/2 function accepts a :json, json source. The private json to node/1 function passes an attacker-controlled node type val...

Photon OS 4.0: Erlang PHSA-2026-4.0-1038

An update of the erlang package has been released. %NASLMINLEVEL 80900 C Tenable, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2026-4.0-1038. The text itself is copyright C VMware, Inc. include'compat.inc'; if description...

CVE-2026-54982

creationtimestamp| type| source ---|---|--- 2026-06-24 17:45:03+00:00| seen| https://www.acn.gov.it/portale/w/rilevata-nuova-vulnerabilita-in-erlang-plug 2026-07-14 19:01:08+00:00| seen| https://advisories.ncsc.nl/advisory?id=NCSC-2026-0231 2026-07-14 22:02:22+00:00| seen|...

OESA-2026-2705 erlang security update

Erlang is a general-purpose programming language and runtime environment. Erlang has built-in support for concurrency, distribution and fault tolerance. Erlang is used in several large telecommunication systems from Ericsson. Security Fixes: Relative Path Traversal, Improper Isolation or...