CVE-2026-87824: luben zstd-jni

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

CVSS 8.7 HighEPSS 0.0039 · 33rd percentile

Published by the CVE Program (CNA: VulnCheck) at 9 Sept 2026, 14:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
luben	zstd-jni https://repo1.maven.org/maven2/com/github/luben/zstd-jni/ pkg:maven/com.github.luben/zstd-jni	affected 1.3.3-1 to before 1.5.7-14 custom Other versions: unaffected

Identifiers

CVE-2026-87824

CNA

VulnCheck

Weakness (CWE)

CWE-125

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.7	High	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0039, the 33rd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 9 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

github.com/luben/zstd-jni/security/advisories/GHSA-257p-3h6w-pg7h vendor-advisory
github.com/luben/zstd-jni/commit/bba6cfca2c0897f1fa004f4193247479f10da853 patch
github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zdict.c technical-description
github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java technical-description
github.com/luben/zstd-jni/releases/tag/v1.5.7-14 release-notes
github.com/luben/zstd-jni/commit/53d3c6342883f7d6717b2477a7f9c1b4a4a56980 technical-descriptionpatch
github.com/luben/zstd-jni product
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

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.