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CVE-2026-75140— jsoup Uncontrolled Resource Consumption in XmlTreeBuilder

Quick assessment

Affected
jhy soup
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

jsoup 在 1.23.2 版本及之前存在一个不受控制的资源消耗漏洞（该漏洞在 commit 862ba2f 中修复）。XmlTreeBuilder 中存在此类漏洞，远程攻击者可通过构造包含大量具有唯一命名空间的深层嵌套 XML 文档，耗尽 JVM 堆内存。由于 XmlTreeBuilder 在处理每个起始元素时都会复制整个继承的命名空间映射，导致时间和内存复杂度呈二次方增长（O(n²)）。攻击者可利用这一缺陷触发 OutOfMemoryError 异常，从而导致应用程序终止。

CVSS 7.5 · High EPSS 0.53% · P42

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
jhy soup ≤ 1.23.1 affected
862ba2f1d48ee95609183dbcfc848c9fd7afc76a unaffected
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I. Basic Information for CVE-2026-75140

Vulnerability Information
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Vulnerability Title
jsoup Uncontrolled Resource Consumption in XmlTreeBuilder
Source: CVE Program / CVE List V5
Vulnerability Description
jsoup through 1.23.2, fixed in commit 862ba2f, contains an uncontrolled resource consumption vulnerability in XmlTreeBuilder that allows remote attackers to exhaust JVM heap memory by supplying a deeply nested XML document with uniquely-namespaced elements. The builder copies the entire inherited namespace map on every start element, causing quadratic time and memory complexity, which attackers can exploit to trigger an OutOfMemoryError and terminate the application.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
jhy soup 0 ~ 1.23.1 -

II. Public POCs for CVE-2026-75140

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 11197 chars
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III. Intelligence Information for CVE-2026-75140

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Patches & Fixes for CVE-2026-75140 (2)

Vendor Advisories for CVE-2026-75140 (1)

IV. Related Vulnerabilities

Same vendor: jhy
Same weakness: CWE-770

V. Comments for CVE-2026-75140

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