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CVE-2026-124249VulnerabilityPublished Updated

Bundesamt für Sicherheit in der Informationstechnik Open Source · Python: Schwachstelle ermöglicht Manipulation von Dateien

Affects Bundesamt für Sicherheit in der Informationstechnik Open SourceSource GCVE Database

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Authoritative record:CVE-2026-124249· Medium 6.3

Not known to be exploited · CVSS 6.3 Medium : upgrade to 3.16.0a2 when convenient.

Data as of 12 Nov 2026, 12:06 UTC

CVSS 4.0 base score
6.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (PSF)CVSS 4.06.3
Patch
Available – fixed in 3.16.0a2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.

What to do

Upgrade CPython to 3.16.0a2.

Affected software

ProductAffectedFixed in
Python Software FoundationCPythonAffected
  • <3.16.0a2
Fixed in
  • 3.16.0a2
GitHubCPythonpkg:github/CPythonOther threatsAffected
  • <3.16.0a2
Fixed in
  • 3.16.0a2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released official security updates for Python 3.11 and 3.12 RPM packages that address CVE-2026-124249. Users of Red Hat Hardened Images should apply these updates promptly to mitigate the vulnerability. The fixed package versions are python3.11-3.11.18-1.3.hum1 and python3.12-3.12.16-2.1.hum1 across supported architectures. No additional mitigation actions are indicated by the vendor advisory.

Description

A vulnerability identified as CVE-2026-124249 affects Python versions distributed in Red Hat Hardened Images. This flaw allows manipulation of files, as noted by the Bundesamt für Sicherheit in der Informationstechnik. Red Hat has issued security advisories providing updated RPM packages for Python 3.11 and 3.12 that address this issue. The advisories include specific package versions that fix the vulnerability. No public exploit or in-the-wild exploitation has been reported to date.

References

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