CVE-2021-31646 json
Gestsup before 3.2.10 allows account takeover through the password recovery functionality (remote).
published 2021-04-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-18534
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
Gestsup before 3.2.10 allows account takeover through the password recovery functionality (remote). The affected component is the file forgot_pwd.php - it uses a weak algorithm for the generation of password recovery tokens (the PHP uniqueid function), allowing a brute force attack.
Patch / fix
- gestsup gestsup 3.2.10
Exploit prediction
1.34% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-307 Improper Restriction of Excessive Authentication Attempts
References
-
gestsup.fr
/index.php?page=download
patch, vendor-advisory
-
gestsup.fr
/index.php?page=download&channel=beta&version=3.2.10&type=patch
patch, vendor-advisory
-
dojo.maltem.ca
/public/advisories/CVE-2021-31646.html
broken-link, third-party-advisory
Sources
- CVE List CVE-2021-31646
- NVD CVE-2021-31646
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.