--- title: "CVE-2026-115907: zip - Denial of Service" description: "zip Rust library 5.1.0 to < 9.0.0 with legacy-zip feature contains a denial of service caused by unbounded preallocation from attacker-controlled ZIP64 uncompressed size in ShrinkDecoder and other decoders, letting attackers cause service termination, exploit requires crafted ZIP archive." url: https://panop.io/threat-heartbeat/CVE-2026-115907/ --- # CVE-2026-115907 zip - Denial of Service zip Rust library 5.1.0 to < 9.0.0 with legacy-zip feature contains a denial of service caused by unbounded preallocation from attacker-controlled ZIP64 uncompressed size in ShrinkDecoder and other decoders, letting attackers cause service termination, exploit requires crafted ZIP archive. CVSS base score 7.5 /10 High CISA KEV Not listed Public exploit None known Authentication Not required [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-115907) ## Details Type Denial of Service Impact Denial Of Service CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Published 26 October 2026 Updated 27 October 2026 Weakness [CWE-400](https://cwe.mitre.org/data/definitions/400.html) ## Vendor fix Update to version 9.0.0 or later. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-115907](https://nvd.nist.gov/vuln/detail/CVE-2026-115907) - [https://github.com/zip-rs/zip2/security/advisories/GHSA-9hj8-73fh-9963](https://github.com/zip-rs/zip2/security/advisories/GHSA-9hj8-73fh-9963) - [https://github.com/zip-rs/zip2/commit/8b4991288b79ad11cce201c2d785d5baa795bd3e](https://github.com/zip-rs/zip2/commit/8b4991288b79ad11cce201c2d785d5baa795bd3e) - [https://github.com/zip-rs/zip2/pull/991](https://github.com/zip-rs/zip2/pull/991) - [https://github.com/zip-rs/zip2/releases/tag/v9.0.0](https://github.com/zip-rs/zip2/releases/tag/v9.0.0) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)