PT-2026-136176

CVE-2026-121419

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Published

2026-11-03

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Updated

2026-11-03

Description by

CVSS 3.1
8.1
High
MetricsAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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.
Exploitability
Fix
Impacts
Researchers
Vendors
Affected products
Weakness enumeration
CWE-269: Improper Privilege Management
Related identifiers
CVE-2026-121419
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