vim up to 9.2.0560 Working Directory code injection

Summaryinfo

A vulnerability, which was classified as critical, was found in vim up to 9.2.0560. This impacts an unknown function of the component Working Directory Handler. Executing a manipulation can lead to code injection. This vulnerability is handled as CVE-2026-52858. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in vim up to 9.2.0560. It has been declared as critical. This vulnerability affects some unknown functionality of the component Working Directory Handler. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-52858 since 06/08/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.

Upgrading to version 9.2.0561 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 4b850457e12e1a678dd209f2868154f7553cbf8d is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Word Processing Software

Name

• vim

Version

• 9.2.0560

License

• open-source

Website

• Product: https://github.com/vim/vim/

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