CVE-2026-73073

Vim is an open source, command line text editor. Prior to 9.2.0845, StructMembers() in runtime/autoload/ccomplete.vim 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.

Vim is an advanced text editor that seeks to provide the power of the de-facto Unix editor 'Vi', with a more complete feature set. Vim is a highly configurable text editor built to enable efficient text editing. It is an improved version of the vi editor distributed with most UNIX systems.

Security Fix(es):

Vim is an open source, command line text editor. Prior to 9.2.0846, set_sofo() in src/spellfile.c reuses sl_sal_first[] without resetting values left by set_sal_first(), so a crafted spell file containing an SN_SAL section before an SN_SOFO section causes under-counted mapping lists and attacker-influenced writes beyond a heap allocation. This issue is fixed in version 9.2.0846.(CVE-2026-73072)

Vim is an open source, command line text editor. Prior to 9.2.0845, StructMembers() in runtime/autoload/ccomplete.vim 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-2026-73073)

Vim is an open source, command line text editor. Prior to 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 operating-system commands invoked through :!, execute with the privileges of the user running Vim. This issue is fixed in version 9.2.0847.(CVE-2026-73076)

Vim is an advanced text editor that seeks to provide the power of the de-facto Unix editor 'Vi', with a more complete feature set. Vim is a highly configurable text editor built to enable efficient text editing. It is an improved version of the vi editor distributed with most UNIX systems.

Security Fix(es):

Vim is an open source, command line text editor. Prior to 9.2.0846, set_sofo() in src/spellfile.c reuses sl_sal_first[] without resetting values left by set_sal_first(), so a crafted spell file containing an SN_SAL section before an SN_SOFO section causes under-counted mapping lists and attacker-influenced writes beyond a heap allocation. This issue is fixed in version 9.2.0846.(CVE-2026-73072)

Vim is an open source, command line text editor. Prior to 9.2.0845, StructMembers() in runtime/autoload/ccomplete.vim 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-2026-73073)

Vim is an open source, command line text editor. Prior to 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 operating-system commands invoked through :!, execute with the privileges of the user running Vim. This issue is fixed in version 9.2.0847.(CVE-2026-73076)

Vim is an advanced text editor that seeks to provide the power of the de-facto Unix editor 'Vi', with a more complete feature set. Vim is a highly configurable text editor built to enable efficient text editing. It is an improved version of the vi editor distributed with most UNIX systems.

Security Fix(es):

Vim is an open source, command line text editor. Prior to 9.2.0846, set_sofo() in src/spellfile.c reuses sl_sal_first[] without resetting values left by set_sal_first(), so a crafted spell file containing an SN_SAL section before an SN_SOFO section causes under-counted mapping lists and attacker-influenced writes beyond a heap allocation. This issue is fixed in version 9.2.0846.(CVE-2026-73072)

Vim is an open source, command line text editor. Prior to 9.2.0845, StructMembers() in runtime/autoload/ccomplete.vim 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-2026-73073)

Vim is an open source, command line text editor. Prior to 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 operating-system commands invoked through :!, execute with the privileges of the user running Vim. This issue is fixed in version 9.2.0847.(CVE-2026-73076)

Vim is an advanced text editor that seeks to provide the power of the de-facto Unix editor 'Vi', with a more complete feature set. Vim is a highly configurable text editor built to enable efficient text editing. It is an improved version of the vi editor distributed with most UNIX systems.

Security Fix(es):

Vim is an open source, command line text editor. Prior to 9.2.0846, set_sofo() in src/spellfile.c reuses sl_sal_first[] without resetting values left by set_sal_first(), so a crafted spell file containing an SN_SAL section before an SN_SOFO section causes under-counted mapping lists and attacker-influenced writes beyond a heap allocation. This issue is fixed in version 9.2.0846.(CVE-2026-73072)

Vim is an open source, command line text editor. Prior to 9.2.0845, StructMembers() in runtime/autoload/ccomplete.vim 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-2026-73073)

Vim is an open source, command line text editor. Prior to 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 operating-system commands invoked through :!, execute with the privileges of the user running Vim. This issue is fixed in version 9.2.0847.(CVE-2026-73076)

Vim is an advanced text editor that seeks to provide the power of the de-facto Unix editor 'Vi', with a more complete feature set. Vim is a highly configurable text editor built to enable efficient text editing. It is an improved version of the vi editor distributed with most UNIX systems.

Security Fix(es):

Vim is an open source, command line text editor. Prior to 9.2.0846, set_sofo() in src/spellfile.c reuses sl_sal_first[] without resetting values left by set_sal_first(), so a crafted spell file containing an SN_SAL section before an SN_SOFO section causes under-counted mapping lists and attacker-influenced writes beyond a heap allocation. This issue is fixed in version 9.2.0846.(CVE-2026-73072)

Vim is an open source, command line text editor. Prior to 9.2.0845, StructMembers() in runtime/autoload/ccomplete.vim 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-2026-73073)

Vim is an open source, command line text editor. Prior to 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 operating-system commands invoked through :!, execute with the privileges of the user running Vim. This issue is fixed in version 9.2.0847.(CVE-2026-73076)

Vim (Vi IMproved) is an updated and improved version of the vi editor.

Security Fix(es):

• vim: Vim: Arbitrary command execution via crafted tags file in C omni-completion (CVE-2026-73073)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Vim (Vi IMproved) is an updated and improved version of the vi editor.

Security Fix(es):

• vim: Vim: Arbitrary command execution via crafted tags file in C omni-completion (CVE-2026-73073)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Vim (Vi IMproved) is an updated and improved version of the vi editor.

Security Fix(es):

• vim: Vim: Arbitrary command execution via crafted tags file in C omni-completion (CVE-2026-73073)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Vim is an open source, command line text editor. Prior to 9.2.0845, StructMembers() in runtime/autoload/ccomplete.vim 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.

Vim (Vi IMproved) is an updated and improved version of the vi editor.

Security Fix(es):

• vim: Vim: Arbitrary command execution via crafted tags file in C omni-completion (CVE-2026-73073)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Vim (Vi IMproved) is an updated and improved version of the vi editor.

Security Fix(es):

• vim: Vim: Arbitrary command execution via crafted tags file in C omni-completion (CVE-2026-73073)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Vim (Vi IMproved) is an updated and improved version of the vi editor.

Security Fix(es):

• vim: Vim: Arbitrary command execution via crafted tags file in C omni-completion (CVE-2026-73073)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Vim is an open source, command line text editor. Prior to 9.2.0845, StructMembers() in runtime/autoload/ccomplete.vim 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.

• SECURITY UPDATE: command injection in the tar plugin: tar#Vimuntar() escaped the tarball name with shellescape() without the special argument before running gunzip/gzip through :!, so characters that Vim expands in a :! command line (such as % and #) survived in the name and let a crafted archive name run arbitrary shell commands.
  • debian/patches/CVE-2026-46483.patch: use the shellescape(name, 1) form for both :! invocations in runtime/autoload/tar.vim; matches upstream patch 9.2.0479.
  • CVE-2026-46483
• SECURITY UPDATE: code injection via netrw directory history: s:NetrwBookHistSave() serialised each history entry into ~/.vim/.netrwhist by wrapping the value in single quotes with string concatenation, so a directory name containing a single quote closed the literal and injected Vimscript that ran when the history file was sourced on the next netrw start.
  • debian/patches/CVE-2026-47162.patch: encode the value with string() in runtime/autoload/netrw.vim; matches upstream patch 9.2.0495.
  • CVE-2026-47162
• SECURITY UPDATE: code execution through Python omni-completion: pythoncomplete and python3complete rebuilt the buffer's Python code and passed it to exec(), including the import and from statements harvested from the buffer, so invoking omni-completion in a hostile Python file executed arbitrary module-level code.
  • debian/patches/CVE-2026-52858.patch: skip import/from statements unless g:pythoncomplete_allow_import is set, in both runtime/autoload/pythoncomplete.vim and python3complete.vim; matches upstream patches 9.2.0561 and 9.2.0568, the latter being required for the opt-in to take effect at all.
  • CVE-2026-52858
• SECURITY UPDATE: out-of-bounds access when a terminal buffer is snapshotted: the per-cell loop in move_terminal_to_buffer() walked cell.chars[] with no upper bound, and libvterm leaves that array unterminated when a cell uses all VTERM_MAX_CHARS_PER_CELL slots (a base character plus five combining marks), so it read past the array and appended the out-of-bounds values to a buffer sized for far fewer bytes.
  • debian/patches/CVE-2026-52859.patch: bound the loop with i < VTERM_MAX_CHARS_PER_CELL and size the buffer for six 6-byte characters, in src/terminal.c; matches upstream patch 9.2.0565 together with its prerequisite 8.1.0611, without which the bounded loop would still overrun the MB_MAXBYTES-sized buffer.
  • CVE-2026-52859
• SECURITY UPDATE: code execution through Python omni-completion definition headers: Scope.get_code() reproduced def and class headers verbatim in the source handed to exec(), and Python evaluates parameter default values, annotations and base-class expressions at definition time, so crafted headers ran arbitrary code during completion even with imports disabled.
  • debian/patches/CVE-2026-52860.patch: strip default values and annotations from parameters and accept only dotted names as base classes, in both runtime/autoload/pythoncomplete.vim and python3complete.vim; matches upstream patch 9.2.0597.
  • CVE-2026-52860
• SECURITY UPDATE: out-of-bounds write reading a crafted spell file: tree_count_words() and sug_filltree() descended the word trie without bounding the depth, so a deeply nested trie wrote past the ends of their MAXWLEN-sized arridx[], curi[] and wordcount[] arrays.
  • debian/patches/CVE-2026-55693.patch: only descend while depth < MAXWLEN - 1 in both trie walkers, in src/spellfile.c; matches upstream patch 9.2.0653.
  • CVE-2026-55693
• SECURITY UPDATE: code injection when netrw opens a remote file: s:NetrwBrowse() passed bufname() unescaped into an :execute'd "b" command, so a buffer name containing the Ex command separator ran arbitrary…

• SECURITY UPDATE: arbitrary Ex command execution during C omni-completion: escaping only "/" and "\" in the typeref/typename tag field was not enough. With no "/" in the payload an unclosed "[" makes :vimgrep's pattern skipping fail, after which the command parser treats a following "|" as a command separator, so a crafted tags entry still runs arbitrary Ex/OS commands when C omni-completion is invoked on a hostile .c file.
  • debian/patches/CVE-2026-73073.patch: match the type field literally with \V ... \m around escape(typename, '/') when building the :vimgrep pattern in s:StructMembers(), in runtime/autoload/ccomplete.vim; matches upstream patch 9.2.0845.
  • CVE-2026-73073

• SECURITY UPDATE: Arbitrary Ex command execution during C omni-completion: s:StructMembers() in runtime/autoload/ccomplete.vim interpolates a tags-file typeref/typename value into a :vimgrep pattern with only "/" and "" escaped, so an unclosed "[" makes vimgrep pattern skipping fail and a following "|" is then parsed as an Ex command separator, running the rest of the tag value as Ex commands
  • debian/patches/CVE-2026-73073.patch: match the typename literally in s:StructMembers() by prefixing it with "\V" and restoring magic mode with "\m" for the trailing "(\t|$)" group, so no regex metacharacter in the tag field can affect :vimgrep pattern parsing; this completes CVE-2026-59858.patch (upstream 9.2.0735), whose escaping alone was insufficient; the upstream src/version.c bump and the new src/testdir/test_plugin_ccomplete.vim test are omitted as they do not apply to 8.1.0875
  • CVE-2026-73073

• CVE-2026-73073: match the tags typeref literally with \V in the C omni-completion :vimgrep pattern so an unclosed [ cannot break out of the pattern and run the rest of the tag value as Ex commands

• CVE-2026-73073: match the tags typeref literally with \V in the C omni-completion :vimgrep pattern so an unclosed [ cannot break out of the pattern and run the rest of the tag value as Ex commands

• CVE-2026-73073: fix command injection via a crafted typename in ccomplete.vim omni completion (upstream 9.2.0845)
• CVE-2026-43961: fix command injection via a crafted filename in netrw marked-file handling (upstream 9.2.0480)

• CVE-2026-73073: fix command injection via a crafted typename in ccomplete.vim omni completion (upstream 9.2.0845)
• CVE-2026-43961: fix command injection via a crafted filename in netrw marked-file handling (upstream 9.2.0480)
• CVE-2026-47167: fix Ruby code execution via a crafted pattern in the cucumber ftplugin (upstream 9.2.0496)

• CVE-2026-73073: fix command injection via a crafted typename in ccomplete.vim omni completion (upstream 9.2.0845)
• CVE-2026-43961: fix command injection via a crafted filename in netrw marked-file handling (upstream 9.2.0480)
• CVE-2026-47167: fix Ruby code execution via a crafted pattern in the cucumber ftplugin (upstream 9.2.0496)

Arbitrary Code Execution via Shell Keyword Lookup in Vim < 9.2.0839. (CVE-2026-73077) Arbitrary Code Execution via Netrw Menu Construction in Vim < 9.2.0840. (CVE-2026-73078) Heap Buffer Overflow in Text Property Handling in Vim < 9.2.0841. (CVE-2026-73074) Stack Buffer Overflow in the Vim Socket Server in Vim < 9.2.0842. (CVE-2026-73070) Out-of-bounds Access in Popup Opacity Handling in Vim >= 9.2.0469 && Vim < 9.2.0843. (CVE-2026-73075) Use-after-free in JSON Decoding in Vim >= 9.2.0511 && Vim < 9.2.0844. (CVE-2026-73071) Arbitrary Ex Command Execution in C Omni-Completion in Vim < 9.2.0845. (CVE-2026-73073) Heap Buffer Overflow when Loading a Spell File in Vim < 9.2.0846. (CVE-2026-73072) Arbitrary Command Execution via Malicious .VimballRecord Entry Replay in vimball.vim. (CVE-2026-73076)

Root has patched CVE-2026-73073 in the vim package for Root:Debian:11. Multiple fixed versions available.

Root has patched CVE-2026-73073 in the vim package for Root:Debian:12. Multiple fixed versions available.

It was discovered that Vim incorrectly handled certain tags files. An attacker could possibly use this issue to execute arbitrary code.

USN-8679-1 fixed a vulnerability in Vim. This update provides the corresponding update for Ubuntu 26.04 LTS.

Original advisory details:

It was discovered that Vim incorrectly handled certain tags files. An attacker could possibly use this issue to execute arbitrary code.