CVE-2026-87825: Luben Zstd-Jni

High severity, CVSS 7.7. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Luben Zstd-Jni: from 1.3.8-4, before 1.5.7-14 (fixed in 1.5.7-14)

Published 2026-09-09. Last modified 2026-09-14.