CVE-2026-87877 — zstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free via Setters Called After close()

2026-09-30T23:34:40.226223+00:00

Affected: luben zstd-jni

zstd-jni versions before 1.5.7-14 fail to validate closed state in setDict, setLongMax, setLevel and setRefMultipleDDicts methods of stream classes. Attackers can call these methods on closed streams to write through freed native pointers, corrupting unrelated objects or crashing the JVM.

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CVE-2026-87877 — zstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free via Setters Called After close()