{"id":"GHSA-gwq9-9ffj-mvrv","aliases":["CVE-2026-93451"],"title":"snappy-java: Heap buffer overflow in Snappy.uncompress*Array typed-array methods","description":"### Impact\n`Snappy.uncompressCharArray`, `uncompressShortArray`, `uncompressIntArray`, `uncompressLongArray`, `uncompressFloatArray` and `uncompressDoubleArray` sized the result array by dividing the declared uncompressed byte length by the element size, but native code wrote the full byte length. If the declared length is not a multiple of the element size, up to 7 bytes are written past the end of the Java array, corrupting the heap.\n\n### Patches\nFixed in 1.1.10.9 ([#739](https://github.com/xerial/snappy-java/pull/739)). These methods now reject uncompressed lengths that are not a multiple of the element size with `SnappyIOException`.\n\n### Workarounds\nCheck that `Snappy.uncompressedLength(input)` is a multiple of the element size before calling these methods.","severity":"high","score":7.5,"published":"2026-10-27T15:33:42.000Z","modified":"2026-10-27T15:47:24.498Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Maven","name":"org.xerial.snappy:snappy-java","ranges":[{"events":[{"introduced":"0"},{"fixed":"1.1.10.9"}],"type":"ECOSYSTEM"}],"versions":["1.0.1-rc1","1.0.1-rc2","1.0.1-rc3","1.0.1-rc4","1.0.3","1.0.3-rc1","1.0.3-rc2","1.0.3-rc3","1.0.3-rc4","1.0.3.1","1.0.3.2","1.0.3.3","1.0.4","1.0.4.1","1.0.5","1.0.5-M1","1.0.5-M2","1.0.5-M3","1.0.5-M4","1.0.5.1","1.0.5.2","1.0.5.3","1.0.5.4","1.1.0","1.1.0-M1","1.1.0-M2","1.1.0-M3","1.1.0-M4","1.1.0.1","1.1.1","1.1.1-M1","1.1.1-M2","1.1.1-M3","1.1.1-M4","1.1.1.1","1.1.1.2","1.1.1.3","1.1.1.4","1.1.1.5","1.1.1.6","1.1.1.7","1.1.10.0","1.1.10.1","1.1.10.2","1.1.10.3","1.1.10.4","1.1.10.5","1.1.10.6","1.1.10.7","1.1.10.8","1.1.2","1.1.2-M1","1.1.2-RC1","1.1.2-RC2","1.1.2-RC3","1.1.2.1","1.1.2.2","1.1.2.3","1.1.2.4","1.1.2.5","1.1.2.6","1.1.3-M1","1.1.3-M2","1.1.4","1.1.4-M1","1.1.4-M2","1.1.4-M3","1.1.7","1.1.7.1","1.1.7.2","1.1.7.3","1.1.7.4","1.1.7.5","1.1.7.6","1.1.7.7","1.1.7.8","1.1.8","1.1.8.1","1.1.8.2","1.1.8.3","1.1.8.4","1.1.9.0","1.1.9.1"],"fixed":["1.1.10.9"]}],"references":["https://github.com/xerial/snappy-java/security/advisories/GHSA-gwq9-9ffj-mvrv","https://nvd.nist.gov/vuln/detail/CVE-2026-93451","https://github.com/xerial/snappy-java/issues/729","https://github.com/xerial/snappy-java/pull/739","https://github.com/xerial/snappy-java/commit/943c6043a292568575e8347af4507d015e802c75","https://github.com/xerial/snappy-java","https://github.com/xerial/snappy-java/blob/v1.1.10.8/src/main/java/org/xerial/snappy/Snappy.java#L802","https://github.com/xerial/snappy-java/releases/tag/v1.1.10.9","https://www.vulncheck.com/advisories/snappy-java-through-1.1.10.8-buffer-overflow-via-typed-uncompress-methods"],"sources":[{"name":"OSV","id":"GHSA-gwq9-9ffj-mvrv","modified":"2026-10-27T15:47:24.498155855Z","url":"https://osv.dev/vulnerability/GHSA-gwq9-9ffj-mvrv"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5}]}