CVE-2026-11972

unknowncovered by 2 sourcesfirst seen 2026-06-09

Multiple vulnerabilities have been discovered in CPython. Some of them allow an attacker to cause remote denial of service, a breach of data confidentiality, and a breach of data integrity.

CSIRTS triage

What: Multiple vulnerabilities can lead to remote denial of service and breaches of data confidentiality and integrity.
Who is affected: Users of CPython.
Urgency: Remediation is urgent due to the potential for denial of service and data breaches.
Action: Apply updates as they become available.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch CVE-2026-11972

Get an email if CVE-2026-11972 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 risk0.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.

Advisory coverage (2)

unknownMultiple vulnerabilities in CPython (June 25, 2026)cert-fr-avis · 2026-06-25
unknownCVE-2026-11972: tarfile opened in streaming mode mishandles EOFmsrc · 2026-06-09

External references

NVD record for CVE-2026-11972

CVE.org record

Embed the live status

— this badge updates automatically when the KEV or exploit status changes. How to embed it →

[![CVE-2026-11972 status](https://www.csirts.com/badge/CVE-2026-11972)](https://www.csirts.com/cve/CVE-2026-11972)