Chainlit before 2.10.1 contains a session hijacking vulnerability that allows unauthenticated attackers to restore and inherit authenticated user sessions by presenting a valid sessionId during WebSocket session restoration without ownership verification. Attackers can exploit the restore_existing_session path to assume a victim's permissions and roles, enabling unauthorized invocation of tools and access to data restricted to the authenticated victim.
Metrics
Affected Vendors & Products
References
History
Mon, 22 Jun 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 22 Jun 2026 15:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Chainlit before 2.10.1 contains a session hijacking vulnerability that allows unauthenticated attackers to restore and inherit authenticated user sessions by presenting a valid sessionId during WebSocket session restoration without ownership verification. Attackers can exploit the restore_existing_session path to assume a victim's permissions and roles, enabling unauthorized invocation of tools and access to data restricted to the authenticated victim. | |
| Title | Chainlit < 2.10.1 Session Hijacking via WebSocket Session Restoration | |
| Weaknesses | CWE-862 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-06-22T14:17:52.640Z
Reserved: 2026-06-18T19:15:10.650Z
Link: CVE-2026-56104
Updated: 2026-06-22T16:06:44.839Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-06-22T16:30:08Z