CVE-2026-92987

roxmltree through 0.21.1 Denial of Service via Quadratic Parsing

Published Sep 17, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Razrfalcon
Razrfalcon roxmltree
Vendors & Products Razrfalcon
Razrfalcon roxmltree
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title roxmltree through 0.21.1 Denial of Service via Quadratic Parsing
Weaknesses CWE-407
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 24, 2026, 2:22 PM
Reserved
Sep 17, 2026, 1:55 PM
Status
Deferred
Published
Sep 17, 2026, 3:17 PM
Modified
Sep 22, 2026, 8:43 PM
Severity
Important
Public date
Sep 17, 2026, 2:22 PM