High severity · published Sep 10, 2026
CVE-2026-89046
zstd-jni 1.5.5-6 through 1.5.7-13 Out-of-Bounds Read via Negative Offset
8.2
CVSS
0.6%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZS
zstd-jni · luben
1.5.5-6 before 1.5.7-14 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89046
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89046
github.com
https://github.com/luben/zstd-jni
github.com
https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java#L730
github.com
https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zstd.c#L87
github.com
https://github.com/luben/zstd-jni/commit/dd08685ef913a32e76fb27f43470035c06758646
github.com
https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14
github.com
https://github.com/luben/zstd-jni/security/advisories/GHSA-rm53-6wf5-f34m
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