CVE-2026-48959
Essential information
- Published
- 27/05/2026 04:16
- Modified
- 27/05/2026 19:38
- Author
- —
- Creator
- —
- CISA KEV
- No
- CWE
- —
- CVSS vector
- — — —
Description
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.
NVD status
- Status
- Deferred — CVE has been recently published to the CVE List and has been received by the NVD.
- Source
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| perl / io | cpe:2.3:a:perl:io::uncompress::unzip:<2.220:*:*:*:*:*:*:* |