SurrealDB from 3.1.0 before 3.3.0 contains an improper authentication vulnerability where the MCP BoundSubject fingerprint uses the access method name instead of per-user identity for JWT/Bearer access. Attackers with a valid low-privilege token for the same access method and a victim's mcp-session-id can hijack the session and execute MCP tools with the victim's roles and permissions.
Metrics
Affected Vendors & Products
Advisories
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Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 03 Nov 2026 14:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | SurrealDB from 3.1.0 before 3.3.0 contains an improper authentication vulnerability where the MCP BoundSubject fingerprint uses the access method name instead of per-user identity for JWT/Bearer access. Attackers with a valid low-privilege token for the same access method and a victim's mcp-session-id can hijack the session and execute MCP tools with the victim's roles and permissions. | |
| Title | SurrealDB 3.1.0 before 3.3.0 MCP Session Hijack via BoundSubject Collision | |
| First Time appeared |
Surrealdb
Surrealdb surrealdb |
|
| Weaknesses | CWE-269 | |
| CPEs | cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Surrealdb
Surrealdb surrealdb |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-11-03T14:28:16.612Z
Reserved: 2026-11-03T12:29:41.359Z
Link: CVE-2026-121419
Vulnrichment
No data.
NVD
Status : Deferred
Published: 2026-11-03T15:17:31.953
Modified: 2026-11-03T15:17:32.103
Link: CVE-2026-121419
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses