EUVD-2026-32044
GHSA-hjrw-gmwj-xc9c
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Denial of service in the zipdetails CLI tool bundled with Perl's IO::Compress versions 2.207 through 2.219 causes the script to abort with status 255 when parsing a ZIP archive containing an Info-ZIP Unix Extra Field (tag 0x7875) that declares an 8-byte UID or GID size. The bug is a typo in the source (calling unpackValueQ instead of unpackValue_Q), and no public exploit is identified at time of analysis; library callers of IO::Compress/IO::Uncompress are unaffected. EPSS is negligible (0.02%) and impact is limited to crashing the inspection tool, not the consuming application.
Technical ContextAI
IO::Compress is a widely distributed Perl distribution (cpe:2.3:a:pmqs:io::compress) that ships utility binaries alongside its compression libraries. The affected component is bin/zipdetails, a ZIP inspection tool. When parsing the Info-ZIP New Unix Extra Field (header tag 0x7875), the decode_ux() routine reads UID/GID size bytes and dispatches into decodeLitteEndian() (sic), which for 8-byte values calls unpackValueQ - a function that does not exist; the file defines unpackValue_Q with an underscore. Perl raises 'Undefined subroutine &main::unpackValueQ' at runtime. The root cause maps to CWE-755 (Improper Handling of Exceptional Conditions): the code did not validate the UID/GID size against a whitelist of supported widths, and the misnamed symbol was never exercised because no one previously tested an 8-byte UID extra field.
RemediationAI
Vendor-released patch: upgrade IO::Compress to version 2.220 or later from CPAN (https://metacpan.org/release/PMQS/IO-Compress-2.220/changes); the upstream commit is https://github.com/pmqs/IO-Compress/commit/33c89d03d6e746ed2ead4f2f6570d47864c61bc7 and was disclosed via oss-security at http://www.openwall.com/lists/oss-security/2026/05/27/3. If immediate upgrade is not possible, avoid running zipdetails against untrusted ZIP archives, or replace its use in any automation with an alternative ZIP inspector such as unzip -l or zipinfo; note that those alternatives produce different output and any scripts parsing zipdetails output will need adjustment. Library-only consumers of IO::Compress/IO::Uncompress need take no action.
sbt is a build tool for Scala, Java, and others. Rated high severity (CVSS 7.1), this vulnerability is no authentication
Denial of service in the Perl module IO::Uncompress::Unzip before version 2.220 allows remote attackers to cause CPU exh
Uncaught exception in IO::Uncompress::Unzip before version 2.215 for Perl causes application-level denial of service whe
Same technique Denial Of Service
View allVendor StatusVendor
SUSE
Severity: HighShare
External POC / Exploit Code
Leaving vuln.today