What’s Vulnerable › Vulnerabilities

CVE-2026-89046: zstd-jni 1.5.5-6 through 1.5.7-13 Out-of-Bounds Read via Negative Offset

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-10 · updated 2026-09-10
• Weakness: CWE-125

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.

Affected products

• luben zstd-jni: from 1.5.5-6 before 1.5.7-14 — fixed in 1.5.7-14

How to fix

Upgrade to a fixed version: luben zstd-jni 1.5.7-14. Check the vendor advisory for mitigations.

References

• 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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