{"id":"GO-2026-5841","aliases":["GHSA-259r-337f-4rfw"],"title":"OOB read in github.com/klauspost/compress/s2","summary":"OOB read in github.com/klauspost/compress/s2","severity":"none","vendor":"klauspost","product":"github.com/klauspost/compress","ecosystem":"go","affected":["github.com/klauspost/compress >= 1.16.0, < 1.18.7"],"patched":["github.com/klauspost/compress 1.18.7"],"published":"2026-07-27","updated":"2026-07-27","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GO-2026-5841","references":[{"url":"https://github.com/klauspost/compress/security/advisories/GHSA-259r-337f-4rfw"},{"url":"https://github.com/klauspost/compress/commit/8668e357e776d5152ed62f33c17f21b8690664fa"}],"tags":["osv","go"],"ingestedAt":"2026-07-27T19:08:55.968Z","slug":"GO-2026-5841","body":"## Overview\n\nProviding a specially crafted dictionary to s2.NewDict and using it to encode data can make the encoder read out of bounds.\n\n## Affected packages\n\n- `github.com/klauspost/compress >= 1.16.0, < 1.18.7`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `github.com/klauspost/compress 1.18.7`","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}