CVE-2022-3433: Haskell Aeson

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

The aeson library is not safe to use to consume untrusted JSON input. A remote user could abuse this flaw to produce a hash collision in the underlying unordered-containers library by sending specially crafted JSON data, resulting in a denial of service.

Affected products

• Haskell Aeson: before 2.0.1.0 (fixed in 2.0.1.0)

Published 2022-10-10. Last modified 2026-06-17.