Security update for python-jwcrypto

Announcement ID: SUSE-SU-2026:21425-1
Release Date: 2026-04-29T08:15:26Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-39373 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  • CVE-2026-39373 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2026-39373 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Products:
  • SUSE Linux Enterprise Server 16.0
  • SUSE Linux Enterprise Server for SAP applications 16.0

An update that solves one vulnerability can now be installed.

Description:

This update for python-jwcrypto fixes the following issues:

  • CVE-2026-39373: weak mitigation for JWT bomb attack in the deserialize function can lead to memory exhaustion via crafted compressed JWE tokens (bsc#1261802).

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Server for SAP applications 16.0
    zypper in -t patch SUSE-SLES-16.0-652=1
  • SUSE Linux Enterprise Server 16.0
    zypper in -t patch SUSE-SLES-16.0-652=1

Package List:

  • SUSE Linux Enterprise Server for SAP applications 16.0 (noarch)
    • python313-jwcrypto-1.5.6-160000.3.1
  • SUSE Linux Enterprise Server 16.0 (noarch)
    • python313-jwcrypto-1.5.6-160000.3.1

References: