CVE-2026-87877
zstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free via Setters Called After close()
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-416 |
| Vendor | luben |
| Product | zstd-jni |
| Published | Sep 9, 2026 |
| Last Updated | Sep 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
luben / zstd-jni
1.3.8-4 < 1.5.7-14
References
github.com: https://github.com/luben/zstd-jni/security/advisories/GHSA-2jw3-mg7f-vw4q github.com: https://github.com/luben/zstd-jni/commit/f38f9a1563113d96d0fc38baee543f7457dd8a8e github.com: https://github.com/luben/zstd-jni/commit/393d7311766abbc285b149302c0fe1f94b16d555 github.com: https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/BaseZstdBufferDecompressingStreamNoFinalizer.java github.com: https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/ZstdInputStreamNoFinalizer.java github.com: https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14 github.com: https://github.com/luben/zstd-jni/commit/0827ed02551bbd8d6f8e4bbff99d83bf50f91938 github.com: https://github.com/luben/zstd-jni vulncheck.com: https://www.vulncheck.com/advisories/zstd-jni-1.3.8-4-through-1.5.7-13-use-after-free-via-setters-called-after-close
Credits
Yu Bao, PayPal Cyber Security Team