High severity7.5NVD Advisory· Published Sep 9, 2026· Updated Sep 20, 2026
CVE-2026-87824
CVE-2026-87824
Description
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 access by providing crafted sample length arrays that cause the native implementation to walk past the buffer allocation, resulting in JVM termination.
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Affected products
2Patches
Vulnerability mechanics
References
7- github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.javanvd
- github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zdict.cnvd
- github.com/luben/zstd-jni/commit/53d3c6342883f7d6717b2477a7f9c1b4a4a56980nvd
- github.com/luben/zstd-jni/commit/bba6cfca2c0897f1fa004f4193247479f10da853nvd
- github.com/luben/zstd-jni/releases/tag/v1.5.7-14nvd
- github.com/luben/zstd-jni/security/advisories/GHSA-257p-3h6w-pg7hnvd
- www.vulncheck.com/advisories/zstd-jni-1.3.3-1-through-1.5.7-13-out-of-bounds-read-via-zstd-trainfrombufferdirectnvd
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