CVE-2026-115907: zip: legacy Shrink/Reduce/Implode decoder: denial of service from attacker-controlled ZIP64 uncompressed size

October 29, 2026

A malicious 149-byte ZIP archive can cause a denial of service in applications that enable legacy-zip and use ZipArchive::extract(). An attacker-controlled ZIP64 uncompressed size triggers a capacity overflow panic in the Shrink decoder in optimized builds, potentially terminating the affected process.

References

github.com/advisories/GHSA-9hj8-73fh-9963
github.com/zip-rs/zip2/commit/8b4991288b79ad11cce201c2d785d5baa795bd3e
github.com/zip-rs/zip2/pull/991
github.com/zip-rs/zip2/releases/tag/v9.0.0
github.com/zip-rs/zip2/security/advisories/GHSA-9hj8-73fh-9963
nvd.nist.gov/vuln/detail/CVE-2026-115907

Code Behaviors & Features

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