CVE-2026-87823
zstd-jni 1.1.1 through 1.5.7-13 Out-of-Bounds Read via Direct ByteBuffer Frame-Size Methods
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, allowing out-of-bounds memory reads via negative or overflowing offsets. Attackers can supply negative offset values near Integer.MIN_VALUE to read unmapped memory, causing JVM termination or extracting arbitrary frame size data from unintended memory locations.
| CWE | CWE-190 |
| 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:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
luben / zstd-jni
1.1.1 < 1.5.7-14
References
github.com: https://github.com/luben/zstd-jni/security/advisories/GHSA-jfr6-9xqw-2g2q github.com: https://github.com/luben/zstd-jni/commit/d7a1c99322d5e1fc71932e722c0b5bb2fc525d3f github.com: https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zstd.c github.com: https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java github.com: https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14 github.com: https://github.com/luben/zstd-jni/commit/46dcb2a54c8b8f2ce2cad7187a7513f509c533ac github.com: https://github.com/luben/zstd-jni vulncheck.com: https://www.vulncheck.com/advisories/zstd-jni-1.1.1-through-1.5.7-13-out-of-bounds-read-via-direct-bytebuffer-frame-size-methods
Credits
Yu Bao, PayPal Cyber Security Team