Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vim | Vim | < 9.2.0597 |
Related Weaknesses (CWE)
References
- https://github.com/vim/vim/commit/c8c63673bc4253212820626aeeb75999d9a539d2Patch
- https://github.com/vim/vim/releases/tag/v9.2.0597Product
- https://github.com/vim/vim/security/advisories/GHSA-52mc-rq6p-rc7cMitigationVendor Advisory
- https://github.com/vim/vim/security/advisories/GHSA-65p9-mwwx-7468Vendor Advisory
- 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
FAQ
What is CVE-2026-52860?
CVE-2026-52860 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 pa...
How severe is CVE-2026-52860?
CVE-2026-52860 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-52860?
Check the references section above for vendor advisories and patch information. Affected products include: Vim Vim.