roxmltree through 0.21.1 Denial of Service via Quadratic Parsing (CVE-2026-92987) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-92987

roxmltree through 0.21.1 Denial of Service via Quadratic Parsing

Answer in brief

CVE-2026-92987 records a Unknown severity vulnerability in roxmltree through 0.21.1 Denial of Service via Quadratic Parsing. The current sources do not mark it as known exploited. The current feed maps RazrFalcon/roxmltree (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps RazrFalcon/roxmltree (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
RazrFalcon/roxmltreegeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for RazrFalcon/roxmltree.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 17, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.