LiveActive security incident?Get immediate response
CVE Record

CVE-2026-28291: simple-git has Command Execution via Option-Parsing Bypass

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.

HighCVSS 8.1Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

simple-git, a JavaScript library used to run Git commands, can be tricked into executing arbitrary commands when unsafe Git options are manipulated. The affected range is before 3.32.0. This matters most for systems where user input can influence Git operations.

Executive priority

Treat as a high-priority dependency upgrade where simple-git is reachable from user-controlled workflows, especially build, repository import, or automation services.

Technical view

CVE-2026-28291 is a CWE-78 command execution issue in simple-git/git-js before 3.32.0. Git option variants can bypass the unsafe-operations plugin’s regex blocklist for options such as -u and --upload-pack. The issue is described as an incomplete fix for CVE-2022-25860.

Likely exposure

Exposure is likely in Node.js applications, CI/CD tools, developer portals, or automation that use simple-git and allow untrusted input to shape Git command options or targets.

Exploitation context

The CVE is not listed as KEV, and the bundle provides no evidence of active exploitation. The advisory describes a high-impact path, but the CVSS vector marks attack complexity as high.

Researcher notes

The key research point is parser mismatch: Git accepts many option spellings, while the prior protection used a finite regex blocklist. Sources indicate complete blocklist coverage may be infeasible without matching Git parsing behavior.

Mitigation direction

  • Upgrade simple-git to version 3.32.0 or later.
  • Inventory direct and transitive uses of simple-git/git-js.
  • Avoid passing untrusted input into Git option construction.
  • Do not rely on regex blocklists for Git option safety.
  • Check vendor advisories for deployment-specific guidance.

Validation and detection

  • Check package manifests, lockfiles, and SBOMs for simple-git versions below 3.32.0.
  • Confirm deployed artifacts match the remediated dependency version.
  • Review application paths that construct Git options from user input.
  • Run regression tests around Git automation after upgrading.
  • Monitor the GitHub advisory and Red Hat entries for status changes.
Prepared
Confidence
high
Sources
9

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-78: Command execution behavior lookup

Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-28291 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
8.1 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
5Timeline events
2ADP providers
9Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: noTechnical Impact: total

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.1CVSS 3.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9GitHub_M
8.1CVSS 3.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

8.1High
CVSS 3.1 vector shape for CVE-2026-28291Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. ADP timelineredhat-SADP

    Made public.

  3. CVE publishedCVE Program

    The CVE record was published.

  4. ADP timelineredhat-SADP

    Reported to Red Hat.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
redhat-SADPsimple-git: simple-git: Command Execution via Option-Parsing Bypass in simple-git
other:Red Hat severity ratingcvssV3_1
  • 2026-04-13T18:01:21.885Z: Reported to Red Hat.
  • 2026-04-13T17:15:14.594Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
steveukxgit-js< 3.32.0Listed
Weakness

CWE details

CWE-78

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.