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CVE-2026-89045— zstd-jni 1.4.8-4 through 1.5.7-13 Denial of Service via Negative Length

Quick assessment

Affected
luben zstd-jni
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

zstd-jni 版本 1.4.8-4 至 1.5.7-13 在 方法中未能验证负数的长度参数，使攻击者能够触发死循环。攻击者可以传入负数的长度值，导致 方法在持有流监视器（stream monitor）的情况下无限循环，从而阻塞所有其他线程对该流的访问。

CVSS 4.0 · Medium

Possible ATT&CK Techniques 1 AI

T1027 · Obfuscated Files or Information
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I. Basic Information for CVE-2026-89045

Vulnerability Information
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Vulnerability Title
zstd-jni 1.4.8-4 through 1.5.7-13 Denial of Service via Negative Length
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
luben zstd-jni 1.4.8-4 ~ 1.5.7-14 -

II. Public POCs for CVE-2026-89045

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-89045

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Patches & Fixes for CVE-2026-89045 (1)

Vendor Advisories for CVE-2026-89045 (2)

Proof of Concept for CVE-2026-89045 (1)

Vendor Pages for CVE-2026-89045 (1)

IV. Related Vulnerabilities

Same product: zstd-jni
Same vendor: luben
Same weakness: CWE-835

V. Comments for CVE-2026-89045

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