Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-66400— Grav Login Plugin before 3.8.13 Insufficient Session Expiration

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 3.8.13之前版本存在会话机制问题漏洞，该漏洞源于TokenStorage.php中findTriplet()方法未能正确验证Remember Me token时间戳，导致攻击者利用捕获的Remember Me cookie可以无限期认证。

CVSS 4.8 · Medium EPSS 0.24% · P14

Affected Version Matrix 2

VendorProduct Version RangeStatus
getgrav grav < 3.8.13 affected
3.8.13 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-66400

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Grav Login Plugin before 3.8.13 Insufficient Session Expiration
Source: CVE Program / CVE List V5
Vulnerability Description
Grav Login Plugin versions before 3.8.13 contain an insufficient session expiration vulnerability in TokenStorage.php where the findTriplet() method fails to properly validate Remember Me token timestamps. Attackers with a captured Remember Me cookie can authenticate indefinitely instead of the configured timeout period, as the expiry check compares an array to a scalar value which always evaluates incorrectly in PHP.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/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 3.8.13之前版本存在会话机制问题漏洞，该漏洞源于TokenStorage.php中findTriplet()方法未能正确验证Remember Me token时间戳，导致攻击者利用捕获的Remember Me cookie可以无限期认证。
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 ~ 3.8.13 -

II. Public POCs for CVE-2026-66400

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-66400

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-66400 (2)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-66400

No comments yet

Leave a comment