SUSE SLES15 Security Update : cjose (SUSE-SU-2026:4251-1)

critical Nessus Plugin ID 347897

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4251-1 advisory.

- CVE-2026-53938: missing encrypted_key length validation during AES Key Wrap decryption can cause heap- based buffer overflow (bsc#1279844).
- CVE-2026-53939: zero-filled content-encryption key generation in AES-CBC-HMAC JWE encryption within cjose can allow unauthorized content modification (bsc#1279846).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

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

Solution

Update the affected libcjose-devel and / or libcjose0 packages.

Plugin Details

Severity: Critical

ID: 347897

File Name: suse_SU-2026-4251-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 9/18/2026

Updated: 9/18/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

Percentile: 95.96

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-53939

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:libcjose-devel, p-cpe:/a:novell:suse_linux:libcjose0

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 9/17/2026

Vulnerability Publication Date: 9/8/2026

Reference Information

CVE: CVE-2026-53938, CVE-2026-53939

SuSE: SUSE-SU-2026:4251-1

Detections

Analytics