CVE-2026-39881
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Command Injection in Vim Netbeans Interface Allows Remote Code Execution

Publication date: 2026-04-08

Last updated on: 2026-04-22

Assigner: GitHub, Inc.

Description
Vim is an open source, command line text editor. Prior to 9.2.0316, a command injection vulnerability in Vim's netbeans interface allows a malicious netbeans server to execute arbitrary Ex commands when Vim connects to it, via unsanitized strings in the defineAnnoType and specialKeys protocol messages. This vulnerability is fixed in 9.2.0316.
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Meta Information
Published
2026-04-08
Last Modified
2026-04-22
Generated
2026-06-16
AI Q&A
2026-04-09
EPSS Evaluated
2026-06-15
NVD
CVE-2026-39881
EUVD
EUVD-2026-20622
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
vim vim to 9.2.0316 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
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Impact Analysis

The vulnerability allows a malicious netbeans server to execute arbitrary Ex commands on the victim's system when Vim connects to it. This can lead to unauthorized modification of data or system behavior, potentially compromising the integrity of the user's environment.

Executive Summary

This vulnerability exists in Vim, an open source command line text editor, prior to version 9.2.0316. It is a command injection vulnerability in Vim's netbeans interface. When Vim connects to a malicious netbeans server, the server can execute arbitrary Ex commands by sending unsanitized strings in the defineAnnoType and specialKeys protocol messages.

Mitigation Strategies

To mitigate this vulnerability, update Vim to version 9.2.0316 or later, where the issue has been fixed.

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