CVE-2021-33642: Openeuler Byacc

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

When a file is processed, an infinite loop occurs in next_inline() of the more_curly() function.

Affected products

• Openeuler Byacc: before 1.9.20200330 (fixed in 1.9.20200330); from 2.0, before 2.0.20210808 (fixed in 2.0.20210808)

Published 2023-01-20. Last modified 2026-06-17.