zstd-jni versions before 1.5.7-14 fail to validate offset and length parameters in the ZstdDictCompress constructor, allowing out-of-bounds memory reads. Attackers can supply untrusted offset or length values to read native heap memory into the compression dictionary, typically causing JVM crashes.
https://github.com/luben/zstd-jni/security/advisories/GHSA-ff36-7w3w-g8rm
https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14
https://github.com/luben/zstd-jni/commit/1c4e5a6c3ce8458095225d987d669e6a0937734a
https://github.com/luben/zstd-jni/commit/0d64de4dee6606ff506be36c7f2e714ad0c80fdb
https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_fast_zstd.c
Published: 2026-09-09
Updated: 2026-09-10
Base Score: 8.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:C
Severity: High
Base Score: 8.2
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Severity: High
Base Score: 8.8
Vector: 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
Severity: High
EPSS: 0.00344