CVE-2011-4953: PYSEC-2026-793 - Cobbler vulnerable to code injection via unsafe YAML loading

CVE-2011-4953 · Severity: info · Published 2026-07-06

Cobbler vulnerable to code injection via unsafe YAML loading

Technologies: cobbler (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2011-4953 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2011-4953 being exploited in the wild.
How severe is CVE-2011-4953?
Informational severity, published 6 July 2026.
Which products and versions are affected?
cobbler (PyPI) ECOSYSTEM:introduced=0,fixed=2.6.0.
Is there a fix for CVE-2011-4953?
Yes. cobbler (PyPI): upgrade to 2.6.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2011-4953?
Check whether you run cobbler (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • cobbler (PyPI): upgrade to 2.6.0 or later
    pip install "cobbler>=2.6.0"

Affected products

  • cobbler (PyPI) ECOSYSTEM:introduced=0,fixed=2.6.0

Identifiers

  • CVE-2011-4953
  • GHSA-hpj3-5p46-g87w
  • PYSEC-2026-793

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