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CVE-2026-48961— IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID

AI Predicted 2.5 Difficulty: Trivial EPSS 0.05% · P15

Possible ATT&CK Techniques 1AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProductVersion RangeStatus
PMQSIO::Compress2.207< 2.220affected
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I. Basic Information for CVE-2026-48961

Vulnerability Information
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Vulnerability Title
IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID
Source: NVD (National Vulnerability Database)
Vulnerability Description
IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID. When decode_ux() in bin/zipdetails handles an Info-ZIP Unix Extra Field (tag 0x7875) with UID Size or GID Size set to 8, causing zipdetails to decode an 8-byte UID or GID value, it dispatches through decodeLitteEndian(), which calls a misnamed helper unpackValueQ. The actual function defined in the same file is unpackValue_Q (with underscore); the call raises 'Undefined subroutine &main::unpackValueQ' and the script exits with status 255. Library callers of IO::Compress and IO::Uncompress are not affected; the defect is in the bundled CLI tool.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对异常条件的处理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
IO-Compress 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IO-Compress是Paul Marquess个人开发者的一个支持多种压缩格式的Perl读写接口库。 IO-Compress 2.207至2.220之前版本存在安全漏洞，该漏洞源于zipdetails CLI工具在处理Info-ZIP Unix Extra Field时因未定义子程序而崩溃，当decode_ux处理UID或GID大小为8的字段时，通过decodeLitteEndian调用错误命名的辅助函数unpackValueQ，实际函数为unpackValue_Q，导致脚本退出状态255，库调用者不
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

VendorProductAffected VersionsCPESubscribe
PMQSIO::Compress 2.207 ~ 2.220 -

II. Public POCs for CVE-2026-48961

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III. Intelligence Information for CVE-2026-48961

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Patches & Fixes for CVE-2026-48961 (1)

Same Patch Batch · PMQS · 2026-05-27 · 4 CVEs total

CVE-2026-48959IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte rea
CVE-2026-48962IO::Compress versions before 2.220 for Perl can execute arbitrary code in File::GlobMapper
CVE-2025-15649IO::Uncompress::Unzip versions before 2.215 for Perl propagate uncaught exception when par

IV. Related Vulnerabilities

Same product: IO::Compress
Same vendor: PMQS
Same weakness: CWE-755

V. Comments for CVE-2026-48961

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