CVE-2026-72700

High

Description

The getgrav/grav-plugin-login Composer plugin before 3.9.1 (used by Grav) compares password reset and account activation tokens using a non-constant-time === string comparison instead of hash_equals() in classes/Controller.php (taskReset()) and login.php (activation handler). Because the token-submission endpoint (taskReset) also lacks rate limiting, an attacker could in principle send repeated token guesses against a known username and use the timing differences to attempt to recover a valid token, though the vendor rates the practical exploitability as low and no end-to-end network exploit has been demonstrated.

SeverityHigh
CVSS7.5
Exploit probability—
ProductGrav
PublishedAug 25, 2026
First seenAug 25, 2026
Weakness typeCWE-208CWE-208

How to fix

Update
  • getgrav grav3.9.1 or later

Affected products

ProductAffected versionsFixed in
getgrav gravv < 3.9.13.9.1

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