CVE-2026-3381: Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-05 · updated 2026-06-17
Weakness: CWE-1284

Description

Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib. Compress::Raw::Zlib includes a copy of the zlib library. Compress::Raw::Zlib version 2.220 includes zlib 1.3.2, which addresses findings fron the 7ASecurity audit of zlib. The includes fixs for CVE-2026-27171.

Affected products

PMQS Compress::Raw::Zlib: through 2.219

References

https://7asecurity.com/blog/2026/02/zlib-7asecurity-audit/
https://github.com/madler/zlib
https://github.com/madler/zlib/releases/tag/v1.3.2
https://github.com/pmqs/Compress-Raw-Zlib/issues/41
https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes
https://www.cve.org/CVERecord?id=CVE-2026-27171
https://www.zlib.net/

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