CVE-2026-52860

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in, but needs a user to act. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-06-11 19:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-09-17 12:18 UTC Last updatedMost recent change to the record

Details

Published

2026-06-11 19:16 UTC

Last modified

2026-09-17 12:18 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-94 · Code injection

Record status

Modified

Affected

• Vim < 9.2.0597

Attack profile CVSS 4.0 · 7.5

Attack vector

Network

Complexity

Low

Attack requirements

Present

Privileges needed

None

User interaction

Active

Confidentiality

High

Integrity

High

Availability

High