CVE-2026-52858
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk18th percentile - higher than 18% of all known CVEs
Summary
Vim prior to version 9.2.0561 has a security issue related to executing code from malicious .py files when using Python's omni-completion feature. As a result, malicious code can be run in the context of the editing user.
Risk Assessment
Organizations may be exposed to the execution of malicious code, potentially leading to unauthorized access to systems or data. Users may inadvertently run dangerous code, increasing the risk of attacks.
Recommendation
It is recommended to update Vim to version 9.2.0561 or later to mitigate this vulnerability. Additionally, avoid opening unknown or suspicious .py files in the editor.
Other vulnerabilities in Vim
See all- CVE-2026-73073High
Vim prior to 9.2.0845 has a vulnerability in StructMembers() in runtime/autoload/ccomplete.vim, which constructs and executes a vimgrep command using an insufficiently escaped typeref: or typename: value from a tags file, allowing an unterminated collection followed by a command separator to execute arbitrary Ex and operating-system commands when a user invokes C omni-completion with CTRL-X CTRL-O on a member access whose type is resolved from that tags file. This issue is fixed in version 9.2.0845.
- CVE-2026-73078High
Vim, an open source command line text editor, prior to 9.2.0840 has a vulnerability in runtime/plugin/netrwPlugin.vim and runtime/pack/dist/opt/netrw/autoload/netrw.vim where Bookmarks, History, and Targets menu entries are constructed by interpolating attacker-controlled directory paths into executed :menu commands. Functions s:NetrwBookmarkMenu(), s:NetrwTgtMenu(), g:netrw_menu_escape, EX_TRLBAR, and netrw#MakeTgt() fail to neutralize the | command separator or single quotes at five construction sites, allowing a crafted path browsed or bookmarked in GUI Vim to execute arbitrary Ex and operating-system commands. The issue is fixed in version 9.2.0840.
- CVE-2026-73076High
In Vim before 9.2.0847, runtime/autoload/vimball.vim allows a crafted vimball member named .VimballRecord to overwrite the installation record with attacker-chosen commands. When vimball#RmVimball() later processes the matching record entry, the stored Ex commands, including OS commands invoked through :!, execute with the privileges of the user running Vim. This issue is fixed in version 9.2.0847.
- CVE-2026-73071Low
Vim, an open source text editor, has a vulnerability in json_decode_item() in src/json.c that can retain a stale pointer after json_decode_string() invokes channel_fill(), causing the error path to read freed memory when an invalid JSON string spans buffers. Affects versions from 9.2.0511 to 9.2.0844, fixed in 9.2.0844.
- CVE-2026-73070Medium
Vim, an open source command line text editor, prior to version 9.2.0842 has a vulnerability in the socket server backend in src/socketserver.c that accepts unbounded client connections, causing descriptors to overflow fd_set structures in src/channel.c and fixed-size struct pollfd arrays in src/os_unix.c. A local process that can connect to the server socket can corrupt stack memory or terminate the Vim server. This issue is fixed in version 9.2.0842.
- CVE-2017-11109High
Vim 8.0 allows attackers to cause a denial of service (invalid free) or possibly have unspecified other impact via a crafted source (aka -S) file.
- CVE-2016-1248High
Vim before patch 8.0.0056 does not properly validate values for the 'filetype', 'syntax', and 'keymap' options, which may result in the execution of arbitrary code if a file with a specially crafted modeline is opened.
- CVE-2024-43802Medium
Vim is an improved version of the Unix vi text editor. When flushing the typeahead buffer, Vim moves the current position in the typeahead buffer but does not check whether there is enough space left in the buffer to handle the next characters. This may lead to the tb_off position within the buffer being out of bounds.
- CVE-2024-47814Low
In Vim before 9.1.0764, a use-after-free occurs when closing a buffer and a BufWinLeave auto command reopens the same buffer in a new split window.
- CVE-2026-34714Critical
A vulnerability in Vim before version 9.2.0272 allows immediate code execution upon opening a crafted file in the default configuration. The issue is due to %{expr} injection in tabpanel lacking the P_MLE flag.
Original NVD description (English source)
Vim is an open source, command line text editor. Prior to version 9.2.0561, the Python omni-completion script in python3complete.vim for Vim with the +python3 interpreter enabled (and the legacy pythoncomplete.vim for builds with the +python interpreter) executes the import and from statements found in the current buffer through Python's import machinery. Because the buffer's working directory is on sys.path, opening a hostile .py file with a sibling Python package and invoking omni-completion runs that package's top-level code as the editing user. This issue has been patched in version 9.2.0561.