Vim: Arbitrary Code Execution via Python Omni-Completion_CVE-2026-52860

7.5 / 10

HIGH

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

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.

Basic Information

ID CVE-2026-52860

Source GitHub_M

Published Jun 11, 2026 at 18:33

Affected Product

Vendor vim

Product vim

Version < 9.2.0597

Affected Versions vim vim < 9.2.0597

CWE Classification

CWE-94

References

{
    "lastseen": "",
    "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.",
    "published": "2026-06-11T18:33:45.838Z",
    "modified": "2026-06-11T18:33:45.838Z",
    "type": "cve",
    "title": "Vim: Arbitrary Code Execution via Python Omni-Completion",
    "source": "GitHub_M",
    "references": "https://github.com/vim/vim/security/advisories/GHSA-65p9-mwwx-7468\nhttps://github.com/vim/vim/security/advisories/GHSA-52mc-rq6p-rc7c\nhttps://github.com/vim/vim/commit/c8c63673bc4253212820626aeeb75999d9a539d2\nhttps://github.com/vim/vim/releases/tag/v9.2.0597",
    "id": "CVE-2026-52860",
    "bulletinFamily": "",
    "cwe": [
        "CWE-94"
    ],
    "cvelist": null,
    "sourceData": "vim vim < 9.2.0597",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "vim",
    "version": "< 9.2.0597",
    "vendor": "vim",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}