{"id":"CVE-2026-116591","revision":"b267ea2bf1d14b51a66708fc35313aee","records":[{"revision":"b267ea2bf1d14b51a66708fc35313aee","observedAt":"2026-10-27T16:45:50.731+00:00","statement":{"source":"nvd","id":"CVE-2026-116591","aliases":[],"title":"compress provides various compression algorithms. Prior to 1.20.2, the zstd DecodeAll and streaming decoder paths can panic when a crafted two-block frame reaches huff0.ReadTable with an FSE normalized count of 32768 that readNCount stores …","description":"compress provides various compression algorithms. Prior to 1.20.2, the zstd DecodeAll and streaming decoder paths can panic when a crafted two-block frame reaches huff0.ReadTable with an FSE normalized count of 32768 that readNCount stores in int16 as -32768. The wrapped count allows buildDtable to retain stale fse.Scratch decode-table state from the prior block, and nextFast then derives an out-of-range state and indexes beyond the table instead of returning a decode error. Both blocks are required to preserve and then reuse the stale state, allowing untrusted zstd input to crash an application. This issue is fixed in version 1.20.2.","state":0,"publishedAt":"2026-10-26T22:16:55.783+00:00","modifiedAt":"2026-10-27T16:03:45.247+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":8.7,"severity":"HIGH"}],"references":["https://github.com/klauspost/compress/commit/7f5d8528720c895a6106f201719f87eb030a565d","https://github.com/klauspost/compress/releases/tag/v1.20.2","https://github.com/klauspost/compress/security/advisories/GHSA-fpmh-frq8-7rj8"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-116591","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-190"],"productCriteria":[],"sourceDates":{"published":"2026-10-26T22:16:55.783","lastModified":"2026-10-27T16:03:45.247"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-116591","identifiers":["CVE-2026-116591"]},"retained":false,"historicalAffected":[]}],"coverage":[]}