High severity · published Jun 11, 2026
CVE-2026-52858
Vim: Arbitrary Code Execution via Python Omni-Completion
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
vim · vim
< 9.2.0561 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-52858
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-52858
Patch
https://github.com/vim/vim/commit/4b850457e12e1a678dd209f2868154f7553cbf8d
Product
https://github.com/vim/vim/releases/tag/v9.2.0561
Mitigation
https://github.com/vim/vim/security/advisories/GHSA-52mc-rq6p-rc7c
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