Vulnerability · Published May 18, 2026 · Assigned by GitHub_M
CVE-2026-30950AutoGPT has Authenticated Session Hijacking via IDOR
High 7.1
In plain English
A high-severity missing authorization in AutoGPT from Significant-Gravitas. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
AutoGPT is a workflow automation platform for creating, deploying, and managing continuous artificial intelligence agents. Versions 0.6.36 through 0.6.50 are vulnerable to Authenticated Session Hijacking via IDOR. If an authenticated attacker can determine the session_id of another user's session, they can take it over, reading any messages in it and locking the legitimate user out. The PATCH /sessions/{session_id}/assign-user endpoint authenticates the caller but never verifies session ownership: the service layer invokes the session lookup with user_id=None, which the data access layer interprets as a privileged/system call that bypasses the ownership filter, allowing any authenticated user to reassign an arbitrary session to themselves. This issue has been patched in version 0.6.51.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Significant-Gravitas | AutoGPT | >= 0.6.36, < 0.6.51 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L