High 7.7Published Sep 9, 2026

CVE-2026-87825zstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free of Compression and Decompression Dictionaries

Updated under an hour ago (Oct 28, 2026, 5:25 PM 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 contains a use-after-free vulnerability where streams and contexts hold a dictionary's shared lock only during the load call, allowing the dictionary to be closed while still referenced. Attackers can close a dictionary after associating it with a stream or context, causing subsequent read or write operations to access freed native memory, resulting in silent data corruption or JVM crashes.

CVSS: 7.7 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weakness (CWE): CWE-416
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 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

luben zstd-jni luben:zstd_jni (from the name)	from 1.3.8-4 before 1.5.7-14	CNA record

References

References

https://github.com/luben/zstd-jni/security/advisories/GHSA-947w-pxjj-c7m9	vendor-advisory
https://github.com/luben/zstd-jni/commit/393d7311766abbc285b149302c0fe1f94b16d555	patch
https://github.com/luben/zstd-jni/commit/a560131d7834598afd9cea6b7c107bc88e915936	patch
https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/ZstdInputStreamNoFinalizer.java	technical-description
https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/BaseZstdBufferDecompressingStreamNoFinalizer.java	technical-description
https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14	release-notes
https://github.com/luben/zstd-jni/commit/0827ed02551bbd8d6f8e4bbff99d83bf50f91938	technical-description, patch
https://github.com/luben/zstd-jni	product
https://www.vulncheck.com/advisories/zstd-jni-1.3.8-4-through-1.5.7-13-use-after-free-of-compression-and-decompression-dictionaries	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.