CVE-2026-0989
CSIRTS triage
- What
- RELAX NG schema validation allows unbounded recursion in include directives leading to stack overflow.
- Who is affected
- Applications parsing RELAX NG schemas from untrusted sources using Libxml2.
- Urgency
- Low priority; requires processing malicious schema input and stack overflow is a denial of service vector.
- Action
- Update Libxml2 to version with recursion depth limits in RELAX NG validation.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-0989
Get an email if CVE-2026-0989 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all EPSS-scored CVEs.
Advisory coverage (1)
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-0989)