CVE-2026-61452
Grav before 2.0.4 Improper Session Invalidation JWT Access Tokens
- State
- Published
- Severity
- 6.9 Medium
- Published
- Jul 15, 2026
- Updated
- Jul 28, 2026
- Reserved
- Jul 9, 2026
Description
The Grav API plugin (getgrav/grav-plugin-api) before 2.0.4 contains an improper session invalidation vulnerability where JWT access tokens are issued without a jti (JWT ID) claim and therefore cannot be revoked server-side. Unlike refresh tokens, access tokens remain valid for their full lifetime (default 1 hour) regardless of logout, password change, new token issuance, or account disablement. An attacker who has stolen an access token retains full API access until the token naturally expires.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | VulnCheck |
Weaknesses
- CWE-613 Insufficient Session Expiration
Affected Products
| Product | Versions |
|---|---|
gravgetgrav |
|
References
- GitHub Security Advisory (GHSA-m8g9-wxhx-6f86)vendor-advisory
- VulnCheck Advisory: Grav before 2.0.4 Improper Session Invalidation JWT Access Tokensthird-party-advisory
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