CVE-2021-46900: Sympa

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Sympa before 6.2.62 relies on a cookie parameter for certain security objectives, but does not ensure that this parameter exists and has an unpredictable value. Specifically, the cookie parameter is both a salt for stored passwords and an XSS protection mechanism.

Affected products

• Sympa Sympa: before 6.2.62 (fixed in 6.2.62)

Published 2023-12-31. Last modified 2026-06-17.