CVE-2026-87795: high-severity vulnerability in luben zstd-jni
zstd-jni 1.2.0 through 1.5.7-13 Out-of-Bounds Read via ZstdDictCompress
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.6%
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.
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
Affected products
luben · zstd-jniRelated CVEs — luben zstd-jni
In the same product, most dangerous first.
CVE-2026-89046HIGHzstd-jni 1.5.5-6 through 1.5.7-13 Out-of-Bounds Read via Negative OffsetEPSS 0.7%CVE-2026-90560HIGHzstd-jni 1.2.0 through 1.5.7-13 Out-of-Bounds Read via ZstdDictDecompressEPSS 0.6%CVE-2026-90852MEDIUMluben zstd-jni Dictionary Sharing ZstdCompressCtx.java ZstdCompressCtx.loadDict use after freeEPSS 0.5%CVE-2026-87823HIGHzstd-jni 1.1.1 through 1.5.7-13 Out-of-Bounds Read via Direct ByteBuffer Frame-Size MethodsEPSS 0.4%CVE-2026-87824HIGHzstd-jni 1.3.3-1 through 1.5.7-13 Out-of-Bounds Read via Zstd.trainFromBufferDirectEPSS 0.4%CVE-2026-87877HIGHzstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free via Setters Called After close()EPSS 0.2%
References
https://github.com/luben/zstd-jnihttps://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/ZstdDictCompress.javahttps://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_fast_zstd.chttps://github.com/luben/zstd-jni/commit/0d64de4dee6606ff506be36c7f2e714ad0c80fdbhttps://github.com/luben/zstd-jni/commit/1c4e5a6c3ce8458095225d987d669e6a0937734ahttps://github.com/luben/zstd-jni/releases/tag/v1.5.7-14https://github.com/luben/zstd-jni/security/advisories/GHSA-ff36-7w3w-g8rmhttps://www.vulncheck.com/advisories/zstd-jni-1.2.0-through-1.5.7-13-out-of-bounds-read-via-zstddictcompress