CVE-2026-26269

Vim is an open source, command line text editor. Prior to 9.1.2148, a stack buffer overflow vulnerability exists in Vim's NetBeans integration when processing the specialKeys command, affecting Vim builds that enable and use the NetBeans feature. The Stack buffer overflow exists in special_keys() (in src/netbeans.c). The while (*tok) loop writes two bytes per iteration into a 64-byte stack buffer (keybuf) with no bounds check. A malicious NetBeans server can overflow keybuf with a single specialKeys command. The issue has been fixed as of Vim patch v9.1.2148.

The following products are affected by CVE-2026-26269 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-26269.

URL	Resource
https://github.com/vim/vim/commit/c5f312aad8e4179e437f81ad39a860cd0ef11970
https://github.com/vim/vim/releases/tag/v9.1.2148
https://github.com/vim/vim/security/advisories/GHSA-9w5c-hwr9-hc68