CVE-2026-87823CWE-190

CVE-2026-87823

High · published September 9, 2026

CVSS v3.1
8.2
EPSS
0%
Percentile
36.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CVSS v4.0
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
EPSS
0.00432 · 36.5th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2026-09-09T19:17Z
References (9)
https://github.com/luben/zstd-jni · [email protected]https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java · [email protected]https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zstd.c · [email protected]https://github.com/luben/zstd-jni/commit/46dcb2a54c8b8f2ce2cad7187a7513f509c533ac · [email protected]https://github.com/luben/zstd-jni/commit/d7a1c99322d5e1fc71932e722c0b5bb2fc525d3f · [email protected]https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14 · [email protected]https://github.com/luben/zstd-jni/security/advisories/GHSA-jfr6-9xqw-2g2q · [email protected]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 · [email protected]https://github.com/luben/zstd-jni/security/advisories/GHSA-jfr6-9xqw-2g2q · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 11 SEP 03:19Z
    EPSS moved — → 0%
    epss
  • 09 SEP 14:32Z
    zstd-jni 1.1.1 through 1.5.7-13 Out-of-Bounds Read via Direct ByteBuffer Frame-Size Methods
    cvelistv5