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
- CVSS 7.0 high
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available