Use After Free Affecting com.github.luben:zstd-jni package, versions [1.3.8-4,1.5.7-14)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-COMGITHUBLUBEN-19659603
- published10 Sept 2026
- disclosed9 Sept 2026
- creditUnknown
Introduced: 9 Sep 2026
NewCVE-2026-87825 (opens in a new tab)How to fix?
Upgrade com.github.luben:zstd-jni to version 1.5.7-14 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free through the dictionary handling in ZstdInputStreamNoFinalizer, ZstdOutputStreamNoFinalizer, ZstdCompressCtx, and ZstdDecompressCtx. An attacker can trigger native memory corruption or a JVM crash by closing a compression or decompression dictionary after it has been attached to a stream or context and then continuing to call read() or write() on that object. The vulnerable code releases the dictionary’s shared lock immediately after the native load call, while the stream or context still keeps a raw reference to the freed native dictionary. This leaves later compression or decompression operations using dangling dictionary state, which can produce silent data corruption or abort the Java process.