CVE-2026-52860 PUBLISHED

Vim: Arbitrary Code Execution via Python Omni-Completion

Assigner: GitHub_M
Reserved: 08.06.2026 Published: 11.06.2026 Updated: 12.06.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 7.5

Product Status

Vendor vim
Product vim
Versions
  • Version < 9.2.0597 is affected

References

Problem Types

  • CWE-94: Improper Control of Generation of Code ('Code Injection') CWE