{"id":"CVE-2026-115907","state":"PUBLISHED","title":"zip: legacy Shrink/Reduce/Implode decoder: denial of service from attacker-controlled ZIP64 uncompressed size","description":"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 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.","publishedAt":"2026-10-26T16:32:15.373Z","updatedAt":"2026-10-30T14:13:49.386Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["zip-rs zip2"],"affected":[{"vendor":"zip-rs","product":"zip2","versions":[{"version":">= 5.1.0, < 9.0.0","status":"affected"}]}],"references":["https://github.com/zip-rs/zip2/security/advisories/GHSA-9hj8-73fh-9963","https://github.com/zip-rs/zip2/pull/991","https://github.com/zip-rs/zip2/commit/8b4991288b79ad11cce201c2d785d5baa795bd3e","https://github.com/zip-rs/zip2/releases/tag/v9.0.0"],"weaknesses":["CWE-400","CWE-789"],"ingestedAt":"2026-10-30T14:28:06.795Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/115xxx/CVE-2026-115907.json","commit":"03ee80f5da31e6cc15e39ca4963953877c90d569","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-115907","state":"PUBLISHED","datePublished":"2026-10-26T16:32:15.373Z","dateUpdated":"2026-10-30T14:13:49.386Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-23T20:21:45.106Z"},"containers":{"cna":{"title":"zip: legacy Shrink/Reduce/Implode decoder: denial of service from attacker-controlled ZIP64 uncompressed size","descriptions":[{"lang":"en","value":"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 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."}],"affected":[{"vendor":"zip-rs","product":"zip2","versions":[{"version":">= 5.1.0, < 9.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/zip-rs/zip2/security/advisories/GHSA-9hj8-73fh-9963","name":"https://github.com/zip-rs/zip2/security/advisories/GHSA-9hj8-73fh-9963","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/zip-rs/zip2/pull/991","name":"https://github.com/zip-rs/zip2/pull/991","tags":["x_refsource_MISC"]},{"url":"https://github.com/zip-rs/zip2/commit/8b4991288b79ad11cce201c2d785d5baa795bd3e","name":"https://github.com/zip-rs/zip2/commit/8b4991288b79ad11cce201c2d785d5baa795bd3e","tags":["x_refsource_MISC"]},{"url":"https://github.com/zip-rs/zip2/releases/tag/v9.0.0","name":"https://github.com/zip-rs/zip2/releases/tag/v9.0.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-789","lang":"en","description":"CWE-789: Memory Allocation with Excessive Size Value","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-26T16:32:15.373Z"},"source":{"advisory":"GHSA-9hj8-73fh-9963","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/zip-rs/zip2/security/advisories/GHSA-9hj8-73fh-9963","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-30T14:13:42.538263Z","id":"CVE-2026-115907","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-30T14:13:49.386Z"}}]}}}