What’s Vulnerable › Vulnerabilities

CVE-2021-31646

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-26 · updated 2026-06-17
• Weakness: CWE-307

Description

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.

Affected products

• GestSup: before 3.2.10 — fixed in 3.2.10

How to fix

Upgrade to a fixed version: GestSup 3.2.10. Check the vendor advisory for mitigations.

References

• https://dojo.maltem.ca/public/advisories/CVE-2021-31646.html
• https://gestsup.fr/index.php?page=download
• https://gestsup.fr/index.php?page=download&channel=beta&version=3.2.10&type=patch
• https://dojo.maltem.ca/public/advisories/CVE-2021-31646.html
• https://gestsup.fr/index.php?page=download
• https://gestsup.fr/index.php?page=download&channel=beta&version=3.2.10&type=patch

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