High 7.5Published Sep 9, 2026

CVE-2026-87824zstd-jni 1.3.3-1 through 1.5.7-13 Out-of-Bounds Read via Zstd.trainFromBufferDirect

Updated under an hour ago (Oct 28, 2026, 11:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for luben zstd-jni

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Awaiting Analysis
Record last updated: Sep 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

luben zstd-jni luben:zstd_jni (from the name)	from 1.3.3-1 before 1.5.7-14	CNA record

References

References

https://github.com/luben/zstd-jni/security/advisories/GHSA-257p-3h6w-pg7h	vendor-advisory
https://github.com/luben/zstd-jni/commit/bba6cfca2c0897f1fa004f4193247479f10da853	patch
https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zdict.c	technical-description
https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java	technical-description
https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14	release-notes
https://github.com/luben/zstd-jni/commit/53d3c6342883f7d6717b2477a7f9c1b4a4a56980	technical-description, patch
https://github.com/luben/zstd-jni	product
https://www.vulncheck.com/advisories/zstd-jni-1.3.3-1-through-1.5.7-13-out-of-bounds-read-via-zstd-trainfrombufferdirect	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.