Detections
Analytics

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : python-Authlib (SUSE-SU-2026:0975-1)

high Nessus Plugin ID 303588

Synopsis

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

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0975-1 advisory.

 - CVE-2026-27962: JWS `deserialize_compact()` allows for signature bypass by accepting user-controlled embedded JWK as verification key (bsc#1259738).
 - CVE-2026-28490: cryptographic padding oracle in JWE RSA1_5 key management algorithm (bsc#1259736).
 - CVE-2026-28498: fail-open in behavior OIDC hash validation allows for bypass mandatory integrity protections (bsc#1259737).

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 python311-Authlib package.

See Also

https://bugzilla.suse.com/1259736

https://bugzilla.suse.com/1259737

https://bugzilla.suse.com/1259738

http://www.nessus.org/u?b59e54b4

https://www.suse.com/security/cve/CVE-2026-27962

https://www.suse.com/security/cve/CVE-2026-28490

https://www.suse.com/security/cve/CVE-2026-28498

Plugin Details

Severity: High

ID: 303588

File Name: suse_SU-2026-0975-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 3/25/2026

Updated: 3/25/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-28498

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

CVSS v4

Risk Factor: High

Base Score: 8.3

Threat Score: 6.9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-28490

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:python311-authlib, cpe:/o:novell:suse_linux:15

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/23/2026

Vulnerability Publication Date: 3/16/2026

Reference Information

CVE: CVE-2026-27962, CVE-2026-28490, CVE-2026-28498

SuSE: SUSE-SU-2026:0975-1