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CVE-2026-92987— roxmltree through 0.21.1 Denial of Service via Quadratic Parsing

Quick assessment

Affected
RazrFalcon roxmltree
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.

roxmltree 在 0.21.1 及之前版本在解析 XML 时，会对属性和命名空间进行二次方时间的验证，且未对属性数量设置限制。攻击者可以构造一个包含数万条属性的 XML 文档，从而消耗大量 CPU 时间，导致拒绝服务（DoS）攻击。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-92987

Vulnerability Information
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Vulnerability Title
roxmltree through 0.21.1 Denial of Service via Quadratic Parsing
Source: CVE Program / CVE List V5
Vulnerability Description
roxmltree through 0.21.1 performs quadratic-time attribute and namespace validation during XML parsing without limits on attribute count. Attackers can craft XML documents with tens of thousands of attributes on a single element to consume excessive CPU time and cause denial of service.
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
算法复杂性
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
RazrFalcon roxmltree 0 ~ 0.21.1 -

II. Public POCs for CVE-2026-92987

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III. Intelligence Information for CVE-2026-92987

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Vendor Advisories for CVE-2026-92987 (2)

IV. Related Vulnerabilities

Same weakness: CWE-407

V. Comments for CVE-2026-92987

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