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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Pmqs Compress\
cpe:2.3:a:pmqs:compress\:\:raw\:\:zlib:*:*:*:*:*:perl:*:*
|
— |
<= 2.219
|
References 7
https://7asecurity.com/blog/2026/02/zlib-7asecurity-audit/
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https://github.com/madler/zlib
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https://github.com/madler/zlib/releases/tag/v1.3.2
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https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes
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https://www.cve.org/CVERecord?id=CVE-2026-27171
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https://www.zlib.net/
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https://github.com/pmqs/Compress-Raw-Zlib/issues/41
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