{"id":"CVE-2026-115907","title":"zip: legacy Shrink/Reduce/Implode decoder: denial of service from attacker-controlled ZIP64 uncompressed size","summary":"zip is a zip library for Rust that supports reading and writing simple ZIP files. From 5.1.0 until 9.0.0, applications built with the legacy-zip feature can reserve output capacity from an attacker-controlled ZIP64 uncompressed size befo…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-400","CWE-789"],"vendor":"zip-rs","product":"zip2","affected":["zip2 >= 5.1.0, < 9.0.0"],"published":"2026-10-26","updated":"2026-10-26","sourceUpdated":"2026-10-26T16:32:15.373Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-115907","references":[{"url":"https://github.com/zip-rs/zip2/security/advisories/GHSA-9hj8-73fh-9963","label":"https://github.com/zip-rs/zip2/security/advisories/GHSA-9hj8-73fh-9963"},{"url":"https://github.com/zip-rs/zip2/pull/991","label":"https://github.com/zip-rs/zip2/pull/991"},{"url":"https://github.com/zip-rs/zip2/commit/8b4991288b79ad11cce201c2d785d5baa795bd3e","label":"https://github.com/zip-rs/zip2/commit/8b4991288b79ad11cce201c2d785d5baa795bd3e"},{"url":"https://github.com/zip-rs/zip2/releases/tag/v9.0.0","label":"https://github.com/zip-rs/zip2/releases/tag/v9.0.0"}],"tags":["cve.org"],"ingestedAt":"2026-10-26T17:33:33.081Z","slug":"CVE-2026-115907","body":"## Overview\n\nzip is a zip library for Rust that supports reading and writing simple ZIP files. From 5.1.0 until 9.0.0, applications built with the legacy-zip feature can reserve output capacity from an attacker-controlled ZIP64 uncompressed size before validating the compressed stream. The ShrinkDecoder path in src/legacy/shrink.rs can panic with a capacity overflow during ZipArchive::extract, and the Reduce and Implode decoders contain the same unbounded preallocation pattern. An unhandled panic can terminate an archive-processing service. This issue is fixed in version 9.0.0.\n\n## Affected\n\n- `zip2 >= 5.1.0, < 9.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}