Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/getgrav/grav/security/advisories/GHSA-x239-6jqx-5hjh
- https://www.vulncheck.com/advisories/grav-before-timing-attack-via-non-constant-
- https://github.com/getgrav/grav/security/advisories/GHSA-x239-6jqx-5hjh
FAQ
What is CVE-2026-72700?
CVE-2026-72700 is a vulnerability with a CVSS score of 7.5 (HIGH). 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()...
How severe is CVE-2026-72700?
CVE-2026-72700 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-72700?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.