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CVE-2026-61452— Grav before 2.0.4 Improper Session Invalidation JWT Access Tokens

Quick assessment

Affected
getgrav grav
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

getgrav Grav是getgrav个人开发者开源的一套可扩展的内容管理系统。 getgrav Grav 2.0.4之前版本存在会话机制问题漏洞，该漏洞源于会话无效化机制不当，JWT访问令牌未包含jti声明导致无法在服务器端撤销，攻击者窃取访问令牌后可在令牌有效期内保持完整API访问权限。

CVSS 5.3 · Medium EPSS 0.33% · P23

Affected Version Matrix 2

VendorProduct Version RangeStatus
getgrav grav < 2.0.4 affected
2.0.4 unaffected
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I. Basic Information for CVE-2026-61452

Vulnerability Information
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Vulnerability Title
Grav before 2.0.4 Improper Session Invalidation JWT Access Tokens
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5
Vulnerability Title
getgrav Grav 会话机制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
getgrav Grav是getgrav个人开发者开源的一套可扩展的内容管理系统。 getgrav Grav 2.0.4之前版本存在会话机制问题漏洞，该漏洞源于会话无效化机制不当，JWT访问令牌未包含jti声明导致无法在服务器端撤销，攻击者窃取访问令牌后可在令牌有效期内保持完整API访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
getgrav grav 0 ~ 2.0.4 -

II. Public POCs for CVE-2026-61452

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III. Intelligence Information for CVE-2026-61452

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Vendor Advisories for CVE-2026-61452 (2)

Same Patch Batch · getgrav · 2026-07-15 · 7 CVEs total

CVE-2026-61451 9.6 CRITICAL Grav before 1.0.4 Password Reset Token Poisoning via admin_base_url
CVE-2026-58655 8.8 HIGH Grav Flex Objects - Server-Side Template Injection via Dynamic Titles
CVE-2026-61457 8.8 HIGH Grav before 1.0.3 Remote Code Execution via File Upload Extension Bypass
CVE-2026-61873 8.1 HIGH Grav before 9.1.8 Arbitrary File Write via Twig-Processed Filename
CVE-2026-61449 6.5 MEDIUM Grav before 2.0.2 Decompression Bomb via Forged ZIP Size
CVE-2026-61453 6.1 MEDIUM Grav before 2.0.1 XSS via Twig String Concatenation

IV. Related Vulnerabilities

Same product: grav
Same vendor: getgrav
Same weakness: CWE-613

V. Comments for CVE-2026-61452

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