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CVE-2026-87823— zstd-jni 1.1.1 through 1.5.7-13 Out-of-Bounds Read via Direct ByteBuffer Frame-Size Methods

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.

luben karavelov Zstd-jni是luben karavelov个人开发者开源的一款为应用程序提供高性能压缩算法本地接口的组件。 luben karavelov Zstd-jni 1.5.7-14之前版本存在数字错误漏洞，该漏洞源于三个直接ByteBuffer帧大小本地方法执行32位有符号边界检查时存在整数溢出，攻击者可提供接近Integer.MIN_VALUE的负偏移值读取未映射内存，可能导致JVM终止或从未预期内存位置提取任意帧大小数据。

CVSS 8.2 · High EPSS 0.43% · P37

Affected Version Matrix 1

VendorProduct Version RangeStatus
luben zstd-jni 1.1.1< 1.5.7-14 affected
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I. Basic Information for CVE-2026-87823

Vulnerability Information
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Vulnerability Title
zstd-jni 1.1.1 through 1.5.7-13 Out-of-Bounds Read via Direct ByteBuffer Frame-Size Methods
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
luben karavelov Zstd-jni 数字错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
luben karavelov Zstd-jni是luben karavelov个人开发者开源的一款为应用程序提供高性能压缩算法本地接口的组件。 luben karavelov Zstd-jni 1.5.7-14之前版本存在数字错误漏洞，该漏洞源于三个直接ByteBuffer帧大小本地方法执行32位有符号边界检查时存在整数溢出，攻击者可提供接近Integer.MIN_VALUE的负偏移值读取未映射内存，可能导致JVM终止或从未预期内存位置提取任意帧大小数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
luben zstd-jni 1.1.1 ~ 1.5.7-14 -

II. Public POCs for CVE-2026-87823

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III. Intelligence Information for CVE-2026-87823

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Patches & Fixes for CVE-2026-87823 (1)

Vendor Advisories for CVE-2026-87823 (2)

Proof of Concept for CVE-2026-87823 (2)

Vendor Pages for CVE-2026-87823 (1)

Same Patch Batch · luben · 2026-09-09 · 5 CVEs total

CVE-2026-87795 8.2 HIGH zstd-jni 1.2.0 through 1.5.7-13 Out-of-Bounds Read via ZstdDictCompress
CVE-2026-87877 7.7 HIGH zstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free via Setters Called After close()
CVE-2026-87825 7.7 HIGH zstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free of Compression and Decompression Dictiona
CVE-2026-87824 7.5 HIGH zstd-jni 1.3.3-1 through 1.5.7-13 Out-of-Bounds Read via Zstd.trainFromBufferDirect

IV. Related Vulnerabilities

Same product: zstd-jni
Same vendor: luben
Same weakness: CWE-190