CVE-2026-33896: Forge has a basicConstraints bypass in its certificate chain verification (RFC 5280 violation)

Overview

Severity
High (CVSS 7.4)
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploit Status
Not Exploited
Patch Tuesday
2026-Mar
Released
2026-03-31
EPSS Score
0.02% (percentile: 4.1%)

Affected Products (2)

Open Source Software

  • azl3 python-tensorboard 2.16.2-6 on Azure Linux 3.0
  • cbl2 reaper 3.1.1-22 on CBL Mariner 2.0

Revision History

  • 2026-03-31: Information published.