CVE-2021-36770: Fedoraproject Fedora

High severity, CVSS 7.8. EPSS: 1.4% chance of exploitation in the next 30 days.

Encode.pm, as distributed in Perl through 5.34.0, allows local users to gain privileges via a Trojan horse Encode::ConfigLocal library (in the current working directory) that preempts dynamic module loading. Exploitation requires an unusual configuration, and certain 2021 versions of Encode.pm (3.05 through 3.11). This issue occurs because the || operator evaluates @INC in a scalar context, and thus @INC has only an integer value.

Affected products

• Fedoraproject Fedora: version 34 only; version 33 only
• p5-Encode Project p5-Encode: from 3.05, before 3.12 (fixed in 3.12)

Published 2021-08-11. Last modified 2026-06-17.