Vulnerability in Getgrav Grav
CVE-2026-72700
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (35.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/getgrav/grav/security/advisories/GHSA-x239-6jqx-5hjh (vendor-advisory)
- www.vulncheck.com/advisories/grav-before-timing-attack-via-non-constant-time-to… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-72700?
- CVE-2026-72700 is a high-severity vulnerability in Getgrav Grav, classified under CWE-208. CVSS score: 7.5/10. Published 2026-08-25.
- How severe is CVE-2026-72700?
- High severity. CVSS v3 base score is 7.5 out of 10.