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    CVE-2026-87825

    zstd-jni before 1.5.7-14 contains a use-after-free vulnerability where streams and contexts hold a dictionary's shared lock only during the load call, allowing the dictionary to be closed while still referenced. Attackers can close a dictionary after associating it with a stream or context, causing subsequent read or write operations to access freed native memory, resulting in silent data corruption or JVM crashes.

    Published:Sep 9, 2026
    Last Modified:Sep 14, 2026
    EPS:Sep 9, 2026
    EPSS Score:0.00133
    CVSS Score:7.7

    Affected Products

    Vendor
    Luben
    Product
    Zstd-jni

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-90852 (CVSS 5.5) — A vulnerability has been found in luben zstd-jni up to 1.5.7-13. This vulnerability affects the function ZstdC…
    CVE-2026-90560 (CVSS 8.8) — zstd-jni versions 1.2.0 through 1.5.7-13 contain an out-of-bounds read vulnerability in the ZstdDictDecompress…
    CVE-2026-89046 (CVSS 8.8) — zstd-jni versions 1.5.5-6 through 1.5.7-13 contain an out-of-bounds read vulnerability in Zstd.getFrameContent…
    CVE-2026-89045 (CVSS 5.1) — zstd-jni versions 1.4.8-4 through 1.5.7-13 fail to validate negative length parameters in ZstdInputStreamNoFin…
    CVE-2026-87877 (CVSS 7) — zstd-jni versions before 1.5.7-14 fail to validate closed state in setDict, setLongMax, setLevel and setRefMul…
    CVE-2026-87824 (CVSS 8.7) — zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing…
    CVE-2026-87823 (CVSS 8.8) — zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native met…
    CVE-2026-87795 (CVSS 8.8) — zstd-jni versions before 1.5.7-14 fail to validate offset and length parameters in the ZstdDictCompress constr…

    References

    https://github.com/luben/zstd-jni
    https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/BaseZstdBufferDecompressingStreamNoFinalizer.java
    https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/ZstdInputStreamNoFinalizer.java
    https://github.com/luben/zstd-jni/commit/0827ed02551bbd8d6f8e4bbff99d83bf50f91938
    https://github.com/luben/zstd-jni/commit/393d7311766abbc285b149302c0fe1f94b16d555
    https://github.com/luben/zstd-jni/commit/a560131d7834598afd9cea6b7c107bc88e915936
    https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14
    https://github.com/luben/zstd-jni/security/advisories/GHSA-947w-pxjj-c7m9
    https://www.vulncheck.com/advisories/zstd-jni-1.3.8-4-through-1.5.7-13-use-after-free-of-compression-and-decompression-dictionaries
    https://github.com/luben/zstd-jni/security/advisories/GHSA-947w-pxjj-c7m9

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High