🛡️ CVE-2023-1636 — barbican

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
• Privileges required: Low — an ordinary user account is enough.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Changed — a successful attack reaches components beyond the vulnerable one.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: Low — limited, and the attacker does not choose what is affected.
• Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2023-1636 is classified as CWE-653: Improper Isolation or Compartmentalization. The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.

Affected software

CVE-2023-1636 is recorded against 2 packages.

• barbican
• openstack-platform

Timeline and source

Published on 7 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

nvd.nist.gov (Advisory)
access.redhat.com (Web)
bugzilla.redhat.com (Web)
github.com (Package)
pypi.org (Package)
github.com (Advisory)

Other advisories for this package

barbican has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2023-1633 (6.6 Medium, published 7 Jul 2026)
• DEBIAN-CVE-2022-3100 (published 18 Jan 2023)
• CVE-2022-3100 (5.9 Medium, published 18 Jan 2023)
• USN-5697-1 (published 25 Oct 2022)
• DLA-3136-1 (published 4 Oct 2022)
• DSA-5247-1 (published 4 Oct 2022)
• UBUNTU-CVE-2022-3100 (published 29 Sep 2022)
• CVE-2022-23451 (8.0 High, published 7 Sep 2022)

Same weakness in other software

These advisories are the same class of weakness (CWE-653: Improper Isolation or Compartmentalization) in other software:

• CVE-2026-71325 (published 18 Aug 2026)
• CVE-2026-65635 (published 30 Jul 2026)
• CVE-2026-53421 (9.8 Critical, published 20 Jul 2026)
• CVE-2026-53405 (9.8 Critical, published 20 Jul 2026)
• CVE-2026-63071 (9.8 Critical, published 20 Jul 2026)
• CVE-2026-15738 (8.5 High, published 14 Jul 2026)
• CVE-2025-12695 (5.9 Medium, published 7 Jul 2026)
• CVE-2026-57135 (8.0 High, published 18 Jun 2026)

Details

Affected Packages

References