Path traversal in ag2 UserProxyAgent via filename argument
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
The ag2ai ag2 package, up to 0.13.4, is affected in its UserProxyAgent component. The os.path.join call uses the filename argument without restricting the resulting path, which allows path traversal (CWE-22). A remote attacker with low privileges can exploit this flaw. A public exploit has been disclosed and is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
A vulnerability was determined in ag2ai ag2 up to 0.13.4. Affected by this issue is the function os.path.join of the component UserProxyAgent. This manipulation of the argument filename causes path traversal. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for ag2.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Vendor assessments
Timeline
- 2026-10-11 Threatist record created from CVE-2026-108543
- 2026-10-11 Alias added: GHSA-624w-5pqv-45mm
- 2026-10-13 CISA SSVC decision points changed
- 2026-10-13 Priority changed: LOW → MEDIUM
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
More ag2ai vulnerabilities
- TI-2026-85711 Newline injection in AG2 SandboxShellTool allows command execution CVSS 3.1HIGH 8.8
Sources
- CVE-2026-108543 · CVE Program
- CVE-2026-108543 · NVD
- FIRST EPSS
- GHSA-624w-5pqv-45mm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-108543 · Red Hat security data · CC BY 4.0
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