Python CPython Remote Denial of Service Vulnerability
Summary
CERT-FR issued a security advisory regarding a remote denial of service vulnerability in Python CPython. The vulnerability (CVE-2026-5713) affects CPython versions without the latest security patch. Organizations using affected Python installations are at risk of remote denial of service attacks.
What changed
CERT-FR published a security bulletin notifying organizations of a remote denial of service vulnerability in Python CPython. The vulnerability allows remote attackers to cause denial of service conditions on affected systems running unpatched CPython versions. The advisory references CVE-2026-5713 and the vendor's security bulletin.\n\nOrganizations using Python CPython should review their current versions and apply the vendor-provided security patch referenced in the advisory. No specific compliance deadline is stated. Organizations should monitor Python security announcement channels for additional updates and remediation guidance.
What to do next
- Apply the latest security patch from the vendor
- Monitor Python security announcements for further updates
Archived snapshot
Apr 15, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Premier Ministre S.G.D.S.N
Agence nationale
de la sécurité des
systèmes d'information
Paris, le 15 avril 2026 N° CERTFR-2026-AVI-0437 Affaire suivie par: CERT-FR
Avis du CERT-FR
Objet: Vulnérabilité dans Python
Gestion du document
| Référence | CERTFR-2026-AVI-0437 |
| Titre | Vulnérabilité dans Python |
| Date de la première version | 15 avril 2026 |
| Date de la dernière version | 15 avril 2026 |
| Source(s) | Bulletin de sécurité Python OG4RHARYSNIE22GGOMVMCRH76L5HKPLM du 14 avril 2026 |
Une gestion de version détaillée se trouve à la fin de ce document.
Risque
- Déni de service à distance
Systèmes affectés
- CPython sans le dernier correctif de sécurité
Résumé
Une vulnérabilité a été découverte dans Python. Elle permet à un attaquant de provoquer un déni de service à distance.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Documentation
- Bulletin de sécurité Python OG4RHARYSNIE22GGOMVMCRH76L5HKPLM du 14 avril 2026
- https://mail.python.org/archives/list/security-announce@python.org/thread/OG4RHARYSNIE22GGOMVMCRH76L5HKPLM/
- Référence CVE CVE-2026-5713
- https://www.cve.org/CVERecord?id=CVE-2026-5713
Gestion détaillée du document
- le 15 avril 2026 Version initiale
Related changes
Get daily alerts for CERT-FR Security Advisories
Daily digest delivered to your inbox.
Free. Unsubscribe anytime.
About this page
Every important government, regulator, and court update from around the world. One place. Real-time. Free. Our mission
Source document text, dates, docket IDs, and authority are extracted directly from CERT-FR.
The summary, classification, recommended actions, deadlines, and penalty information are AI-generated from the original text and may contain errors. Always verify against the source document.
Classification
Who this affects
Taxonomy
Browse Categories
Get alerts for this source
We'll email you when CERT-FR Security Advisories publishes new changes.
Subscribed!
Optional. Filters your digest to exactly the updates that matter to you.