Command Injection Vulnerability in Vim's NetBeans Interface
Summary
ALPINE-CVE-2026-39881: Vim is an open source, command line text editor. Affects vim versions < 9.2.0321-r0. Fixed in 9.2.0321-r0. How to fix ↓
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Background
Vim is a widely used open-source command line text editor known for its efficiency and versatility. It supports various programming languages and offers features like syntax highlighting, code folding, and extensive plugin support. However, prior to version 9.2.0316, Vim's integration with NetBeans was susceptible to a command injection vulnerability that could be exploited by malicious servers.
Vulnerability Detail
The vulnerability arises from unsanitized strings in the defineAnnoType and specialKeys protocol messages within Vim's NetBeans interface. When Vim connects to a compromised NetBeans server, it may inadvertently execute arbitrary Ex commands, leading to potential unauthorized access or manipulation of the user's environment. This flaw poses significant risks, especially in environments where Vim is used to edit sensitive code or configuration files.
How To Fix
Minimum fixed version
9.2.0321-r0
This is the first release that contains the fix.
sudo apk add --upgrade vimTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can avoid connecting Vim to untrusted NetBeans servers until the update is applied. This can help prevent potential exploitation of the vulnerability.
Conclusion
In summary, the command injection vulnerability in Vim's NetBeans interface poses a risk to users connecting to untrusted servers. It is crucial to update to the latest version to ensure the security of your environment. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
See every vulnerability recorded for vim →
FAQ
The CVSS score of this vulnerability is 5.0, indicating a medium level of severity.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
Versions of Vim prior to 9.2.0316 are affected by this command injection vulnerability.
If you cannot update Vim immediately, avoid connecting to untrusted NetBeans servers to minimize the risk of exploitation.
More information can be found in the CVE database under CVE-2026-39881.
References
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