CVE-2022-31099: Pomsky-Lang Pomsky

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

rulex is a new, portable, regular expression language. When parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately. This is a security concern for you, if your service parses untrusted rulex expressions (expressions provided by an untrusted user), and your service becomes unavailable when the process running rulex aborts due to a stack overflow. The crash is fixed in version **0.4.3**. Affected users are advised to update to this version. There are no known workarounds for this issue.

Affected products

• Pomsky-Lang Pomsky: before 0.4.3 (fixed in 0.4.3)

Published 2022-06-27. Last modified 2026-06-17.