Medium severity · published Sep 10, 2026
CVE-2026-89045
zstd-jni 1.4.8-4 through 1.5.7-13 Denial of Service via Negative Length
4.0
CVSS
0.2%
EPSS
No
On KEV
Description
zstd-jni versions 1.4.8-4 through 1.5.7-13 fail to validate negative length parameters in ZstdInputStreamNoFinalizer.read(), allowing attackers to trigger infinite loops. Attackers can pass negative length values to cause the read method to spin indefinitely while holding the stream monitor, blocking all other threads from accessing the stream.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZS
zstd-jni · luben
1.4.8-4 before 1.5.7-14 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89045
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89045
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/ZstdInputStreamNoFinalizer.java#L133
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-9jx2-gfp9-phfm
www.vulncheck.com
https://www.vulncheck.com/advisories/zstd-jni-1.4.8-4-through-1.5.7-13-denial-of-service-via-negative-length
More from zstd-jni
8.2
CVE-2026-90560
zstd-jni 1.2.0 through 1.5.7-13 Out-of-Bounds Read via ZstdDictDecompress
8.2
CVE-2026-89046
zstd-jni 1.5.5-6 through 1.5.7-13 Out-of-Bounds Read via Negative Offset
8.2
CVE-2026-87823
zstd-jni 1.1.1 through 1.5.7-13 Out-of-Bounds Read via Direct ByteBuffer Frame-Size Methods
8.2
CVE-2026-87795
zstd-jni 1.2.0 through 1.5.7-13 Out-of-Bounds Read via ZstdDictCompress
7.7
CVE-2026-87877
zstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free via Setters Called After close()