CVE-2026-28291

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 64% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.1
EG Score
8.1(medium)
EPSS
47.1%
KEV
Not listed

Published

April 13, 2026

Last Modified

July 15, 2026

Advisory Details (5)

Auto-updated May 13, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Command Execution via Option-Parsing Bypass in simple-git · Advisory · steveukx/git-js · GitHub

https://github.com/steveukx/git-js/security/advisories/GHSA-jcxm-m3jx-f287
generic
https://www.cve.org/CVERecord?id=CVE-2022-25860
generic

Release [email protected] · steveukx/git-js · GitHub

https://github.com/steveukx/git-js/releases/tag/simple-git%403.32.0
generic

Unsafe plugin extended to more ways of the `-u` switch being sent to … · steveukx/git-js@1effd8e · GitHub

https://github.com/steveukx/git-js/commit/1effd8e5012a5da05a9776512fac3e39b11f2d2d
generic

git-js/simple-git/src/lib/plugins/block-unsafe-operations-plugin.ts at 789c13ebabcf18ebe0b3a0c88ebb4037dede42e3 · steveukx/git-js · GitHub

https://github.com/steveukx/git-js/blob/789c13ebabcf18ebe0b3a0c88ebb4037dede42e3/simple-git/src/lib/plugins/block-unsafe-operations-plugin.ts#L26

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
simple-git—3.32.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 107 total refreshes for this CVE.

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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-28291?
CVE-2026-28291 is a high vulnerability published on April 13, 2026. 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…
When was CVE-2026-28291 disclosed?
CVE-2026-28291 was first published in the National Vulnerability Database on April 13, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-28291 actively exploited?
CVE-2026-28291 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 47.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-28291?
CVE-2026-28291 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-28291?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-28291, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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