# CVE-2026-87795

## Summary

- **CVE ID:** CVE-2026-87795
- **Severity:** HIGH
- **CVSS Score:** 8.8 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-125
- **Published:** Sep 9, 2026
- **Last Modified:** Sep 9, 2026

## Description

zstd-jni versions before 1.5.7-14 fail to validate offset and length parameters in the ZstdDictCompress constructor, allowing out-of-bounds memory reads. Attackers can supply untrusted offset or length values to read native heap memory into the compression dictionary, typically causing JVM crashes.

## Affected Products

- luben — zstd-jni (1.2.0)

## References

- [CNA](https://github.com/luben/zstd-jni/security/advisories/GHSA-ff36-7w3w-g8rm)
- [CNA](https://github.com/luben/zstd-jni/commit/0d64de4dee6606ff506be36c7f2e714ad0c80fdb)
- [CNA](https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/ZstdDictCompress.java)
- [CNA](https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_fast_zstd.c)
- [CNA](https://github.com/luben/zstd-jni/commit/1c4e5a6c3ce8458095225d987d669e6a0937734a)
- [CNA](https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14)
- [CNA](https://github.com/luben/zstd-jni)
- [CNA](https://www.vulncheck.com/advisories/zstd-jni-1.2.0-through-1.5.7-13-out-of-bounds-read-via-zstddictcompress)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._