Bug 2457930 (CVE-2026-28291)

Summary:	CVE-2026-28291 simple-git: simple-git: Command Execution via Option-Parsing Bypass in simple-git
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	aschwart, asoldano, aszczucz, bbaranow, bmaxwell, boliveir, bstansbe, dhanak, dlofthou, drichtar, drosa, ibek, istudens, ivassile, iweiss, jrokos, lchilton, mnovotny, mosmerov, mposolda, msvehla, nwallace, pberan, pesilva, pjindal, pmackay, rmartinc, rstancel, sausingh, sfeifer, smaestri, ssilvert, sthorger, thjenkin, vdosoudi, vmuzikar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in simple-git, a JavaScript library for running native Git commands. An attacker could exploit this vulnerability by manipulating Git options, bypassing existing safety checks. This incomplete fix for a previous vulnerability allows for the execution of arbitrary commands, leading to potential system compromise.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-04-13 18:01:45 UTC

simple-git enables running native Git commands from JavaScript. Versions up to and including 3.31.1 allow execution of arbitrary commands through Git option manipulation, bypassing safety checks meant to block dangerous options like -u and --upload-pack. The flaw stems from an incomplete fix for CVE-2022-25860, as Git's flexible option parsing allows numerous character combinations (e.g., -vu, -4u, -nu) to circumvent the regular-expression-based blocklist in the unsafe operations plugin. Due to the virtually infinite number of valid option variants that Git accepts, a complete blocklist-based mitigation may be infeasible without fully emulating Git's option parsing behavior. This issue has been fixed in version 3.32.0.