Vim: Command injection in tar#Vimuntar via missing shellescape {special} flag

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Summary

CVECVE-2026-46483
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-15 15:16:54 UTC
Updated2026-05-19 12:27:28 UTC
DescriptionVim is an open source, command line text editor. Prior to 9.2.0479, a command injection vulnerability exists in tar#Vimuntar() in runtime/autoload/tar.vim when decompressing .tgz archives on Unix-like systems. The function builds :!gunzip and :!gzip -d commands using shellescape(tartail) without the {special} flag, allowing a crafted archive filename to trigger Vim cmdline-special expansion and execute shell commands in the user's context. This vulnerability is fixed in 9.2.0479.

Risk And Classification

Primary CVSS: v3.1 7 HIGH from [email protected]

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.000170000 probability, percentile 0.043410000 (date 2026-05-26)

Problem Types: CWE-78 | CWE-88 | CWE-78 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | CWE-88 CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7HIGHCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1[email protected]Secondary3.6LOWCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
3.1CNADECLARED3.6LOWCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Vim Vim All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Vim Vim affected < 9.2.479 Not specified

References

ReferenceSourceLinkTags
github.com/vim/vim/releases/tag/v9.2.0479 [email protected] github.com Product
github.com/vim/vim/security/advisories/GHSA-2fpv-9ff7-xg5w [email protected] github.com Patch, Vendor Advisory
github.com/vim/vim/commit/3fb5e58fbc63d86a3e65f1a141b0d67af2aa38a1 [email protected] github.com Patch
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