Skip to content
Python 3.9 Security Flaws Addressed in Fedora Updates

Python 3.9 Security Flaws Addressed in Fedora Updates

First seen 4 Nov 2026, 08:50 UTC • •
API

Article Content

Browse articles
ThreatCluster AI
ThreatCluster •November 4, 2026 at 08:51 UTC
  • •Two critical vulnerabilities in Python 3.9 identified as CVE-2026-11940 and CVE-2026-15308.
  • •Affected Fedora versions include 43, 44, and 45, with a high CVSS score indicating serious risk.
  • •Users are urged to apply the latest updates to prevent unauthorized code execution.

Fedora has released security updates for Python 3.9 addressing two vulnerabilities identified as CVE-2026-11940 and CVE-2026-15308. These vulnerabilities could allow attackers to execute code without authentication, impacting users of Fedora 43, 44, and 45. The flaws were published on June 23 and July 9, 2026, respectively, with a CVSS score of 7.8 and 8.7, indicating high severity. The updates were made available on September 23, 2026, and users are advised to upgrade their installations using the 'dnf' package manager. The vulnerabilities primarily affect systems running Fedora that utilize the Python 3.9 package. Security professionals should prioritize applying these updates to mitigate potential exploitation risks.

Start a free Starter trial for enhanced analysis

Ask AI about this cluster

Updated 1h ago How this analysis works

Timeline

2026-06-23
CVE-2026-11940 published
A high-severity vulnerability in Python 3.9 allowing potential code execution was disclosed.
Linuxsecurity
2026-07-09
CVE-2026-15308 published
Another critical vulnerability in Python 3.9 was published, increasing the urgency for updates.
Linuxsecurity
2026-09-23
Security updates released
Fedora released patches for CVE-2026-11940 and CVE-2026-15308 for Python 3.9.
Linuxsecurity

More articles in this cluster (3)

Following this threat?

Track Fedora and CVE-2026-11940 in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.

Free account · no card needed

Extracted Entities (9)

1 / 3

Common questions

Which Fedora versions are affected?
Fedora versions 43, 44, and 45 are affected by the vulnerabilities in Python 3.9.
What are the CVEs related to these vulnerabilities?
The vulnerabilities are identified as CVE-2026-11940 and CVE-2026-15308.
How can I apply the updates?
Users can apply the updates using the 'dnf' package manager with the command provided in the advisories.