Vulnerability · Published Sep 17, 2026 · Assigned by VulnCheck
CVE-2026-92987roxmltree through 0.21.1 Denial of Service via Quadratic Parsing
High 7.5
In plain English
A high-severity security flaw in roxmltree from RazrFalcon. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 49.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| RazrFalcon | roxmltree | 0 – through 0.21.1 |
Weakness: CWE-407 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- GitHub Issue #153 issue-tracking
- https://github.com/RazrFalcon/roxmltree product
- https://github.com/RazrFalcon/roxmltree/blob/v0.21.1/src/parse.rs#L1014-L1020 technical-description
- https://github.com/RazrFalcon/roxmltree/blob/v0.21.1/src/lib.rs#L751-L755 technical-description
- VulnCheck Advisory: roxmltree through 0.21.1 Denial of Service via Quadratic Parsing third-party-advisory