Skip to content
CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-72700

Grav before 3.9.1 Timing Attack via Non-Constant-Time Token Comparison

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

getgrav grav

Default version status: unaffected

  • 0 to < 3.9.1affected
  • 3.9.1unaffected

References