CVE-2026-48959
IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward. fastForward() compares length $offset (the digit count of the offset, 1 to 19) against the chunk size $c instead of $offset itself, so $c shrinks from 16 KiB to 1-19 bytes per iteration. Extracting a named entry from an attacker supplied zip via IO::Uncompress::Unzip->new($zip, Name => $target) drives a per-byte read loop scaling with the entry's compressed size, up to the non-Zip64 4 GiB cap.
| CWE | CWE-407 |
| Vendor | pmqs |
| Product | io::uncompress::unzip |
| Published | May 27, 2026 |
| Last Updated | May 29, 2026 |
Stay Ahead of the Next One
Get instant alerts for pmqs io::uncompress::unzip
Be the first to know when new high vulnerabilities affecting pmqs io::uncompress::unzip are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
PMQS / IO::Uncompress::Unzip
0 < 2.220