Path Traversal Vulnerability in ag2ai UserProxyAgent Component
CVE-2026-108543

5.3MEDIUM

Key Information:

Vendor

Ag2ai

Status
Ag2
Vendor
CVE Published:
11 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-108543?

A vulnerability exists in the ag2ai product, specifically within the UserProxyAgent component, affecting versions up to 0.13.4. This issue arises from improper handling of the filename argument in the os.path.join function, allowing for a path traversal attack. Such an exploit enables unauthorized access to system files, as attackers can manipulate the input to traverse directories. This vulnerability has been publicly disclosed, raising concerns for systems that have not yet been patched. Despite early notifications, the vendor has not responded to this serious disclosure.

Affected Version(s)

ag2 0.13.0

ag2 0.13.1

ag2 0.13.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-108543 - Proof of Concept

References

https://vuldb.com/vuln/416198
vdb-entrytechnical-description
https://vuldb.com/vuln/416198/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-108543
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ruoyyy (VulDB User)
VulDB CNA Team
.