RCE in Vim
CVE-2026-52860
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Vim — versions < 9.2.0597
Weakness classification (CWE)
References
- github.com/vim/vim/commit/c8c63673bc4253212820626aeeb75999d9a539d2 (Patch)
- github.com/vim/vim/releases/tag/v9.2.0597 (Product)
- github.com/vim/vim/security/advisories/GHSA-52mc-rq6p-rc7c (Mitigation, Vendor Advisory)
- github.com/vim/vim/security/advisories/GHSA-65p9-mwwx-7468 (Vendor Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-52860?
- CVE-2026-52860 is a high-severity vulnerability in Vim, classified under Code Injection. CVSS score: 7.8/10. Published 2026-06-11.
- How severe is CVE-2026-52860?
- High severity. CVSS v3 base score is 7.8 out of 10.