{"id":"CVE-2026-106453","revision":"3f19b28508e1484c8e2b9c7838b76f9b","records":[{"revision":"3f19b28508e1484c8e2b9c7838b76f9b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-106453","aliases":[],"title":"yawkat LZ4 Java: LZ4DecompressorWithLength allocates the unvalidated size from the 4-byte length header, so a 5-byte input triggers a 1 GiB allocation and OutOfMemoryError","description":"yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, LZ4DecompressorWithLength uses getDecompressedLength to trust the four-byte decompressed-length header before validating the compressed input, allowing a five-byte attacker-supplied input whose header declares a large output size to request up to approximately 2 GiB and exhaust the JVM heap. Convenience overloads backed by LZ4FastDecompressor or LZ4SafeDecompressor allocate the untrusted size, while overloads that write to a caller-provided destination buffer are not affected because the caller controls the destination size. This issue is fixed in version 1.11.2.","state":0,"publishedAt":"2026-10-06T19:54:04.124+00:00","modifiedAt":"2026-10-07T17:07:33.181+00:00","affected":[{"ecosystem":"Vendor product","name":"lz4-java","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"yawkat\",\n                    \"product\": \"lz4-java\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.11.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/yawkat/lz4-java/security/advisories/GHSA-6cx8-rjf8-pr8g","https://github.com/yawkat/lz4-java/commit/6492ce5aca6bd03ff9e08ee18a2beb94c431371a","https://github.com/yawkat/lz4-java/releases/tag/v1.11.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-106453","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-106453","identifiers":["CVE-2026-106453"]},"retained":false,"historicalAffected":[]}],"coverage":[]}