CVE-2026-109342
Deferred Deferred - Pending Action

SurrealDB Missing Authentication in Revoke RPC Method

Publication date: 2026-10-12

Last updated on: 2026-10-12

Assigner: VulnCheck

Description
SurrealDB from 3.0.0 before 3.3.0 contains a missing authentication vulnerability in the revoke RPC method that allows low-privileged or unauthenticated callers to invalidate other users' refresh tokens without proof of possession. Attackers can obtain grant identifiers via ACCESS SHOW ALL with VIEWER permission or leaked tokens, then permanently revoke refresh tokens to force re-authentication.

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Meta Information

Published
2026-10-12
Last Modified
2026-10-12
Generated
2026-10-12
AI Q&A
2026-10-12
EPSS Evaluated
N/A
NVD
CVE-2026-109342
EUVD
EUVD-2026-97644

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
surrealdb surrealdb 3.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-306 The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

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Executive Summary

CVE-2026-109342 is a missing authentication vulnerability in SurrealDB versions 3.0.0 to 3.2.9 affecting the revoke RPC method. It allows low-privileged or unauthenticated attackers to invalidate other users' refresh tokens without proof of possession by exploiting grant identifiers obtained via ACCESS SHOW ALL with VIEWER permission or leaked tokens.

Detection Guidance

Check SurrealDB versions between 3.0.0 and 3.2.9 for the vulnerability. Use the ACCESS SHOW ALL command with VIEWER permission to identify grant identifiers that could be exploited. Monitor RPC method calls to the revoke endpoint for unauthorized token revocations.

Impact Analysis

This vulnerability can cause denial of service by forcing users to re-authenticate due to permanent revocation of refresh tokens. It does not allow account takeover or data disclosure but disrupts normal operations by invalidating tokens without proper authorization.

Mitigation Strategies

Upgrade SurrealDB to version 3.3.0 or later to patch the vulnerability. Disable the revoke RPC method if not required. Restrict network access to the RPC endpoint and treat grant identifiers as sensitive information to prevent unauthorized access.

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