CVE-2026-6879
A vulnerability has been discovered in CPython. It allows an attacker to cause a remote denial of service.
CSIRTS triage
- What
- A vulnerability allows an attacker to cause a remote denial of service.
- Who is affected
- Users of CPython are affected.
- Urgency
- Remediation is necessary, but the vulnerability is not actively exploited.
- Action
- Users should apply updates as they become available.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
Advisory coverage (2)
- unknownVulnerability in CPython (July 30, 2026)cert-fr-avis · 2026-07-30
- unknownCVE-2026-6879: `Element.findall()` and fully-consumed `Element.iterfind()` exhibit `O(n^2)` time complexity wh…nvd · 2026-07-28
External references
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[](https://www.csirts.com/cve/CVE-2026-6879)