{"id":"CVE-2026-87823","aliases":["GHSA-jfr6-9xqw-2g2q"],"url":"https://o3.security/vulnerability/CVE-2026-87823","summary":"zstd-jni 1.1.1 through 1.5.7-13 Out-of-Bounds Read via Direct ByteBuffer Frame-Size Methods","details":"zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, allowing out-of-bounds memory reads via negative or overflowing offsets. Attackers can supply negative offset values near Integer.MIN_VALUE to read unmapped memory, causing JVM termination or extracting arbitrary frame size data from unintended memory locations.","published":"2026-09-09T14:32:43.442Z","modified":"2026-09-10T08:16:10.902528Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/luben/zstd-jni/commit/46dcb2a54c8b8f2ce2cad7187a7513f509c533ac","label":"luben/zstd-jni@46dcb2a"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87823.json"},{"type":"PACKAGE","url":"https://github.com/luben/zstd-jni"},{"type":"ARTICLE","url":"https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java"},{"type":"ARTICLE","url":"https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zstd.c"},{"type":"FIX","url":"https://github.com/luben/zstd-jni/commit/46dcb2a54c8b8f2ce2cad7187a7513f509c533ac"},{"type":"FIX","url":"https://github.com/luben/zstd-jni/commit/d7a1c99322d5e1fc71932e722c0b5bb2fc525d3f"},{"type":"ADVISORY","url":"https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14"},{"type":"ADVISORY","url":"https://github.com/luben/zstd-jni/security/advisories/GHSA-jfr6-9xqw-2g2q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87823"},{"type":"WEB","url":"https://repo1.maven.org/maven2/com/github/luben/zstd-jni/"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/zstd-jni-1.1.1-through-1.5.7-13-out-of-bounds-read-via-direct-bytebuffer-frame-size-methods"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T08:16:10.902528Z"}}