CVE-2026-52860
Vim Vim
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.
Exploitation status
- A vendor advisory or patch reference has been published.
What the metrics mean
- It is requires local access to the machine.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, no account is needed.
- Beyond that, someone has to be persuaded to take an action first.
Scoring
- CVSS
- 7.8 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- CVSS v4
- 7.5
- Weakness
- CWE-94
- Assigned by
- security-advisories@github.com
Dates
- Published
- 2026-06-11
- Last modified
- 2026-08-24
- Sources
- NVD
Affected products
- Vim Vim- 9.2.0597
As listed in the NVD configuration data. Not a statement about your estate.
References
- https://github.com/vim/vim/commit/c8c63673bc4253212820626aeeb75999d9a539d2
- https://github.com/vim/vim/releases/tag/v9.2.0597
- https://github.com/vim/vim/security/advisories/GHSA-52mc-rq6p-rc7c
- https://github.com/vim/vim/security/advisories/GHSA-65p9-mwwx-7468
- https://access.redhat.com/security/cve/CVE-2026-52860
- https://bugzilla.redhat.com/show_bug.cgi?id=2487987
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52860.json