CVE-2026-121419
SurrealDB from 3.1.0 before 3.3.0 contains an improper authentication vulnerability where the MCP…
- Risk score
- 49/100
- CVSS
- 8.1 v3.1
- Published
- 3 Nov 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 s…
- Affected
- See advisory
- Fix
- Upgrade the product to 3.3.0 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 8.1 high
References
Original 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.
Last activity 3 Nov 2026. Patch Forecast updates every hour.