CVE-2012-6125: Call-Cc Chicken

Critical severity, CVSS 9.8. EPSS: 1.8% chance of exploitation in the next 30 days.

Chicken before 4.8.0 is susceptible to algorithmic complexity attacks related to hash table collisions.

Affected products

• Call-Cc Chicken: before 4.8.0 (fixed in 4.8.0)

Published 2019-10-31. Last modified 2026-06-16.