CVE-2026-89046: Luben Zstd-Jni

High severity, CVSS 8.2. EPSS: 0.7% chance of exploitation in the next 30 days.

zstd-jni versions 1.5.5-6 through 1.5.7-13 contain an out-of-bounds read vulnerability in Zstd.getFrameContentSize that fails to validate negative srcPosition arguments. Attackers can supply negative offset values that bypass bounds checks and reach the native frame-header parser, causing out-of-bounds memory reads that lead to information disclosure or JVM crashes.

Affected products

• Luben Zstd-Jni: from 1.5.5-6, before 1.5.7-14 (fixed in 1.5.7-14)

Published 2026-09-10. Last modified 2026-09-10.