CVE-2026-116591
Severity not reportedcompress provides various compression algorithms.
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.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/klauspost/compress/commit/7f5d8528720c895a6106f201719f87eb030a565d security-advisories@github.com
- https://github.com/klauspost/compress/releases/tag/v1.20.2 security-advisories@github.com
- https://github.com/klauspost/compress/security/advisories/GHSA-fpmh-frq8-7rj8 security-advisories@github.com