CVE-2026-72700

Summary

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 Software

Weaknesses

• CWE-208: Observable Timing Discrepancy

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: partial

Additional References

• https://github.com/getgrav/grav/security/advisories/GHSA-x239-6jqx-5hjh

References

• https://github.com/getgrav/grav/security/advisories/GHSA-x239-6jqx-5hjh
• https://www.vulncheck.com/advisories/grav-before-timing-attack-via-non-constant-time-token-comparison

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