High severity · published Sep 15, 2026
CVE-2026-90852
luben zstd-jni Dictionary Sharing ZstdCompressCtx.java ZstdCompressCtx.loadDict use after free
7.3
CVSS
0.5%
EPSS
No
On KEV
Description
A vulnerability has been found in luben zstd-jni up to 1.5.7-13. This vulnerability affects the function ZstdCompressCtx.loadDict of the file ZstdCompressCtx.java of the component Dictionary Sharing. Such manipulation leads to use after free. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.7-14 is able to resolve this issue. The name of the patch is a560131d7834598afd9cea6b7c107bc88e915936. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZS
zstd-jni · luben
1.5.7-13 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90852
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-90852
github.com
https://github.com/luben/zstd-jni/
github.com
https://github.com/luben/zstd-jni/commit/a560131d7834598afd9cea6b7c107bc88e915936
github.com
https://github.com/luben/zstd-jni/issues/404
github.com
https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14
vuldb.com
https://vuldb.com/cve/CVE-2026-90852
vuldb.com
https://vuldb.com/submit/927022
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