{"id":"CVE-2026-87824","title":"zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attackers to read past buffer boundaries by supplying oversized per-sample lengths","summary":"zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attackers to read past buffer boundaries by supplying oversized per-sample lengths. Attackers can trigger out-of-bounds memory…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-125"],"vendor":"luben","product":"zstd-jni","affected":["zstd-jni >= 1.3.3-1 < 1.5.7-14"],"published":"2026-09-09","updated":"2026-09-20","sourceUpdated":"2026-09-20T01:16:31.623","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87824","references":[{"url":"https://github.com/luben/zstd-jni","label":"disclosure@vulncheck.com"},{"url":"https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java","label":"disclosure@vulncheck.com"},{"url":"https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zdict.c","label":"disclosure@vulncheck.com"},{"url":"https://github.com/luben/zstd-jni/commit/53d3c6342883f7d6717b2477a7f9c1b4a4a56980","label":"disclosure@vulncheck.com"},{"url":"https://github.com/luben/zstd-jni/commit/bba6cfca2c0897f1fa004f4193247479f10da853","label":"disclosure@vulncheck.com"},{"url":"https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14","label":"disclosure@vulncheck.com"},{"url":"https://github.com/luben/zstd-jni/security/advisories/GHSA-257p-3h6w-pg7h","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/zstd-jni-1.3.3-1-through-1.5.7-13-out-of-bounds-read-via-zstd-trainfrombufferdirect","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87824.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-87824"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2530998"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-87824"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87824"},{"url":"https://access.redhat.com/errata/RHSA-2026:71675"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-20T00:08:06.268866Z"},"epss":0.00716,"epssPercentile":0.51717,"ingestedAt":"2026-09-10T19:29:24.706Z","patched":["build_of_apache_camel_4_18_4_for_spring_boot 3.5.16"],"slug":"CVE-2026-87824","body":"## Overview\n\nzstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attackers to read past buffer boundaries by supplying oversized per-sample lengths. Attackers can trigger out-of-bounds memory access by providing crafted sample length arrays that cause the native implementation to walk past the buffer allocation, resulting in JVM termination.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Exploit Intelligence, OpenShift Developer Tools and Services, Red Hat build of Apache Camel 4 for Quarkus 3, Red Hat build of Apicurio Registry 3, Red Hat build of Debezium 3, Red Hat Ceph Storage 9, … · no fix planned: Red Hat Ceph Storage 9, Exploit Intelligence, OpenShift Developer Tools and Services, Red Hat build of Apache Camel 4 for Quarkus 3, … · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87824.json)\n- **RHSA-2026:71675** · Red Hat · fixed in: Red Hat build of Apache Camel 4.18.4 for Spring Boot 3.5.16 · released 2026-09-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:71675)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}