Bug 2543508 (CVE-2026-102827)

Summary: CVE-2026-102827 simple-git: simple-git: unsafe-operations plugin bypass via git long-option abbreviation (--receive-p/--exe) -> command execution (residual of CVE-2026-28291)
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: anujha, aschwart, asoldano, aszczucz, bbaranow, bmaxwell, boliveir, bstansbe, dlofthou, drichtar, gbenhaim, istudens, ivassile, iweiss, lchilton, mosmerov, mposolda, msvehla, niyer, nwallace, pberan, pesilva, pjindal, pmackay, rhel-process-autobot, rmartinc, rstancel, sfeifer, ssilvert, sthorger, thjenkin, twaugh, vdosoudi, vmuzikar, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in simple-git. This vulnerability allows an attacker who can influence command arguments to achieve arbitrary command execution on the host system. The library's security filter checks for dangerous options using exact names but fails to account for Git accepting abbreviated command options. Consequently, an attacker can supply abbreviated push options to bypass validation checks and execute arbitrary commands in applications that process untrusted input.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-09-29 18:52:47 UTC 
simple-git, an interface for running git commands in any node.js application, enables applications to execute Git operations from JavaScript. Prior to 4.0.0, the default blockUnsafeOperationsPlugin compares parsed option names with literal dangerous option spellings while Git accepts unambiguous long-option abbreviations. Attacker-influenced push arguments such as abbreviated --receive-pack or --exec forms can therefore bypass detectVulnerableFlags, reach git push against a local or file remote or an attacker-influenced receive-pack target, and cause Git to invoke an attacker-selected command in consumers that expose those arguments. The clone-side abbreviation handling does not protect the push path. This issue is fixed in 4.0.0.