CVE-2026-52858: Vim: Arbitrary Code Execution via Python Omni-Completion

Published Jun 11, 2026
·
Updated

Last updated 19 June 2026

Other sources

Vim is an open source, command line text editor. Prior to version 9.2.0561, the Python omni-completion script in python3complete.vim for Vim with the +python3 interpreter enabled (and the legacy pythoncomplete.vim for builds with the +python interpreter) executes the import and from statements found in the current buffer through Python's import machinery. Because the buffer's working directory is on sys.path, opening a hostile .py file with a sibling Python package and invoking omni-completion runs that package's top-level code as the editing user. This issue has been patched in version 9.2.0561.

— MITRE

Vim: Arbitrary Code Execution via Python Omni-Completion

— Microsoft

Affected Software

9 affected componentsFixes available
vim Vim<9.2.0561
vim Vim<9.2.0561
Microsoft azl3 vim 9.2.0488-1<9.2.0620-1
9.2.0620-1
debian/vim*
debian/vim<2:9.1.1230-2+deb13u1
2:9.1.1230-2+deb13u1
debian/vim<2:9.2.0782-1
2:9.2.0782-1
debian/vim<=2:9.0.1378-2+deb12u2, <=2:9.1.1230-2
2:9.1.1230-2+deb13u12:9.2.0858-1
alpine/vim<9.2.0498-r0
9.2.0498-r0
alpine/vim<9.2.0498-r0
9.2.0498-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 9.2.0620-1
  2. Upgrade

    Upgrade debian/vim to a version that resolves this vulnerability.

    Fixed in 2:9.1.1230-2+deb13u1
  3. Upgrade

    Upgrade debian/vim to a version that resolves this vulnerability.

    Fixed in 2:9.2.0782-1
  4. Upgrade

    Upgrade debian/vim to a version that resolves this vulnerability.

    Fixed in 2:9.1.1230-2+deb13u1Fixed in 2:9.2.0858-1
  5. Upgrade

    Upgrade alpine/vim to a version that resolves this vulnerability.

    Fixed in 9.2.0498-r0
  6. Upgrade

    Upgrade Vim (python3complete.vim / pythoncomplete.vim omni-completion) to a version that resolves this vulnerability.

    Fixed in 9.2.0561

Event History

Jun 11, 2026
CVE Published
via MITRE·06:32 PM
Data Sourced
via MITRE·06:32 PM
DescriptionWeakness
Data Sourced
via Red Hat·07:02 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·07:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·07:16 PM
DescriptionSeverityAffected Software
Jun 13, 2026
Data Sourced
via Microsoft·08:01 AM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2026-52858?

The severity of CVE-2026-52858 is rated as high with a CVSS score of 7.3.

2

How do I fix CVE-2026-52858?

To fix CVE-2026-52858, upgrade Vim to version 9.2.0561 or later.

3

What type of vulnerability is CVE-2026-52858?

CVE-2026-52858 is a code injection vulnerability that allows arbitrary code execution.

4

Which versions of Vim are affected by CVE-2026-52858?

Versions prior to 9.2.0561 of Vim with the +python3 interpreter enabled are affected by CVE-2026-52858.

5

What impact does CVE-2026-52858 have on Vim users?

CVE-2026-52858 allows attackers to execute arbitrary code via the Python omni-completion feature.

Company

Resources

Contact

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