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python omni-completion
About this tag
The tag python omni-completion on WindowsForum.com covers security vulnerabilities in Vim's Python omni-completion feature, specifically CVE-2026-52858 and CVE-2026-52860. These flaws allow attacker-controlled Python code execution when a user opens a hostile Python buffer and triggers completion in Vim versions prior to 9.2.0561 and 9.2.0597 respectively. Discussions emphasize that developer tooling like Vim is part of the endpoint attack surface, particularly on Windows systems where editors and interpreters operate in a trusted workspace. The content focuses on patching, upgrading Vim, and understanding the risk of language-aware editing features in security workflows.
CVE-2026-52858 is a Vim vulnerability published in June 2026 affecting Python omni-completion before Vim 9.2.0561, where invoking completion on a hostile Python buffer can execute attacker-controlled import code with the privileges of the user running the editor. That makes this less a “remote...
Microsoft’s Security Update Guide now lists CVE-2026-52860, a Vim vulnerability disclosed in June 2026 that allows attacker-controlled Python code to run when a user opens a hostile Python buffer and triggers Vim’s Python omni-completion before upgrading to Vim 9.2.0597. The bug is not a Windows...