CVE-2026-89045: Luben Zstd-Jni

Medium severity, CVSS 4.0. EPSS: 0.2% chance of exploitation in the next 30 days.

zstd-jni versions 1.4.8-4 through 1.5.7-13 fail to validate negative length parameters in ZstdInputStreamNoFinalizer.read(), allowing attackers to trigger infinite loops. Attackers can pass negative length values to cause the read method to spin indefinitely while holding the stream monitor, blocking all other threads from accessing the stream.

Affected products

• Luben Zstd-Jni: from 1.4.8-4, before 1.5.7-14 (fixed in 1.5.7-14)

Published 2026-09-10. Last modified 2026-09-15.