CVE-2026-92987 roxmltree through 0.21.1 Denial of Service via Quadratic Parsing
Attackers can cause denial of service by crafting XML documents with excessive attributes, leading to quadratic CPU consumption in the roxmltree library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-92987?
CVE-2026-92987 is a high-severity denial of service vulnerability in RazrFalcon roxmltree, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-407
Which versions are affected by CVE-2026-92987?
Linux distribution packages (1)
python-uv openSUSE:Tumbleweed | All versions | 0.12.17-1.1 |
How do I fix CVE-2026-92987?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-92987 being exploited?
There is no known exploitation of CVE-2026-92987 in the wild and no public exploit code.
Sources
Also known as AZL-105209, GHSA-5fxw-8768-v85x, openSUSE-SU-2026:11841-1.