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CVE-2026-87824 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/luben/zstd-jni	[email protected]
https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java	[email protected]
https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zdict.c	[email protected]
https://github.com/luben/zstd-jni/commit/53d3c6342883f7d6717b2477a7f9c1b4a4a56980	[email protected]
https://github.com/luben/zstd-jni/commit/bba6cfca2c0897f1fa004f4193247479f10da853	[email protected]
https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14	[email protected]
https://github.com/luben/zstd-jni/security/advisories/GHSA-257p-3h6w-pg7h	[email protected]
https://www.vulncheck.com/advisories/zstd-jni-1.3.3-1-through-1.5.7-13-out-of-bounds-read-via-zstd-trainfrombufferdirect	[email protected]

see all 8 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-125	Out-of-bounds Read	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 20, 2026	CVE Modified	CISA-ADP
Sep 9, 2026	New CVE Received	[email protected]