Erlang/OTP 22.2 < 27.3.4.14 / 28.0 < 28.5.0.3 / 29.0 < 29.0.3 DoS (CVE-2026-55952)

high Nessus Plugin ID 325888

Synopsis

The remote host is missing a security update.

Description

The version of Erlang/OTP installed on the remote host is 22.2 prior to 27.3.4.14, 28.0 prior to 28.5.0.3, or 29.0 prior to 29.0.3. It is, therefore, affected by a vulnerability:

- 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. An unauthenticated remote attacker can send a single crafted ClientHello to a TLS 1.3 server with session tickets enabled and permanently disrupt session ticket handling on that listener. (CVE-2026-55952)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Erlang/OTP version 27.3.4.14, 28.5.0.3, or 29.0.3 or later.

Plugin Details

Severity: High

ID: 325888

File Name: erlang_otp_CVE-2026-55952.nasl

Version: 1.1

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 7/9/2026

Updated: 7/9/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.14

CVSS v2

Risk Factor: High

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-55952

CVSS v3

Risk Factor: High

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: cpe:/a:erlang:erlang%2fotp

Required KB Items: installed_sw/Erlang-OTP

Patch Publication Date: 7/2/2026

Vulnerability Publication Date: 7/2/2026

Reference Information

CVE: CVE-2026-55952

Detections

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