Vim: Arbitrary Code Execution via Python Omni-Completion (CVE-2026-52860) | HOL Guard CVE

High · CVSS 7.8CVE-2026-52860

Vim: Arbitrary Code Execution via Python Omni-Completion

Answer in brief

CVE-2026-52860 records a High severity (CVSS 7.8) vulnerability in Vim: Arbitrary Code Execution via Python Omni-Completion. The current sources do not mark it as known exploited. The current feed maps vim/vim (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 11, 2026Updated Aug 24, 2026Source checked Aug 24, 2026First seen by HOL Jul 15, 2026Material review Aug 24, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps vim/vim (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
vim/vimgeneric	< 9.2.0597	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for vim/vim.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Jun 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 15, 2026

Sources and claim methodology

Upstream source description

Vim is an open source, command line text editor. Prior to version 9.2.0597, Vim's Python omni-completion executes reconstructed function and class definitions from the current buffer with exec() as part of populating the completion dictionary. Python evaluates function default values, parameter annotations, and class base expressions at definition time, so a hostile buffer can execute attacker-controlled Python expressions during omni-completion. The existing g:pythoncomplete_allow_import mitigation (GHSA-52mc-rq6p-rc7c) does not cover this path, because the attacker-controlled code is not a harvested import/from statement. This issue has been patched in version 9.2.0597.

Quoted source text, attributed separately from HOL analysis.