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Vulnerability record · CVE-2026-89046 · published 10 September 2026

CVE-2026-89046: Out-of-bounds read vulnerability

zstd-jni versions 1.5.5-6 through 1.5.7-13 contain an out-of-bounds read vulnerability in Zstd.getFrameContentSize that fails to validate negative srcPosition arguments. Attackers can supply negative offset values that bypass bounds checks and reach the native frame-header parser, causing out-of-bounds memory reads that lead to information disclosure or JVM crashes.

8.8 CVSS 4.0 High EPSS 0.65% · top 50.9% CWE-125 · Out-of-bounds read Awaiting Analysis
8.8CVSS 4.0 base score
0.65%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
8References
10 Sep 2026Last modified by NVD

Description

zstd-jni versions 1.5.5-6 through 1.5.7-13 contain an out-of-bounds read vulnerability in Zstd.getFrameContentSize that fails to validate negative srcPosition arguments. Attackers can supply negative offset values that bypass bounds checks and reach the native frame-header parser, causing out-of-bounds memory reads that lead to information disclosure or JVM crashes.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/luben/zstd-jni
https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java#L730
https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zstd.c#L87
https://github.com/luben/zstd-jni/commit/dd08685ef913a32e76fb27f43470035c06758646
https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14
https://github.com/luben/zstd-jni/security/advisories/GHSA-rm53-6wf5-f34m
https://www.vulncheck.com/advisories/zstd-jni-1.5.5-6-through-1.5.7-13-out-of-bounds-read-via-negative-offset
https://github.com/luben/zstd-jni/security/advisories/GHSA-rm53-6wf5-f34m

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Source: NIST National Vulnerability Database (record CVE-2026-89046), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.