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CVE-2026-4176— Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib

Quick assessment

Affected
SHAY perl
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Perl是Perl社区的一款通用、解释型、动态的跨平台编程语言。 Perl 5.9.4至5.40.4-RC1之前版本、5.41.0至5.42.2-RC1之前版本和5.43.0至5.43.9之前版本存在安全漏洞，该漏洞源于Compress::Raw::Zlib模块存在多个漏洞。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.81% · P56

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-4176

Vulnerability Information
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Vulnerability Title
Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib
Source: CVE Program / CVE List V5
Vulnerability Description
Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib. Compress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1395
Source: CVE Program / CVE List V5
Vulnerability Title
Perl 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Perl是Perl社区的一款通用、解释型、动态的跨平台编程语言。 Perl 5.9.4至5.40.4-RC1之前版本、5.41.0至5.42.2-RC1之前版本和5.43.0至5.43.9之前版本存在安全漏洞，该漏洞源于Compress::Raw::Zlib模块存在多个漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SHAY perl 5.9.4 ~ 5.40.4-RC1 -

II. Public POCs for CVE-2026-4176

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III. Intelligence Information for CVE-2026-4176

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Vendor Advisories for CVE-2026-4176 (1)

Mailing List Discussions for CVE-2026-4176 (1)

Vendor Pages for CVE-2026-4176 (2)

Other References for CVE-2026-4176 (1)

IV. Related Vulnerabilities

Same product: perl
Same weakness: CWE-1395

V. Comments for CVE-2026-4176

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