A vulnerability was detected in 0-Gaurav-0 nexus-mcp aed0026e7ac1f23dc940e46e9fd3a2da6904f914. Affected by this issue is the function child_process.exec of the file src/auth/browser.ts of the component nexus_reauth MCP tool. The manipulation of the argument url results in command injection. The attack may be performed from remote. The exploit is now public and may be used. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The project was informed of the problem early through an issue report but has not responded yet.
CVE-2026-94031
MEDIUMPre-NVD 6.36.3Trending — 3 sources updated this week
EchelonGraph scoreLOW confidence
This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). 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: secondary
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 6.3Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.3
- EG Score
- 6.3(low)
- EG Risk
- 33(Track)EG Risk 33/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity63% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
September 20, 2026
Last Modified
September 20, 2026
Advisory Details (3)
Auto-updated Sep 20, 2026🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available
Command Injection Vulnerability in nexus-mcp · Issue #1 · Xh1Xxhg/public_exp · GitHub
https://github.com/Xh1Xxhg/public_exp/issues/1generic🟡 PoC Available
Command Injection Vulnerability in nexus-mcp · Issue #1 · 0-Gaurav-0/nexus-mcp · GitHub
https://github.com/0-Gaurav-0/nexus-mcp/issues/1generic
GitHub - 0-Gaurav-0/nexus-mcp: Universal multi-AI gateway MCP server · GitHub
https://github.com/0-Gaurav-0/nexus-mcp/Vendor Advisories for CVE-2026-94031(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 4× in last 7d / 4× 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.
- 2026-09-20 14:29 UTCEG score recompute
- 2026-09-20 14:28 UTCNVD updateCVSS v4 → 2.1
- 2026-09-20 14:16 UTCEG score recompute
- 2026-09-20 14:16 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(4)
What is CVE-2026-94031?
CVE-2026-94031 is a medium vulnerability published on September 20, 2026. A vulnerability was detected in 0-Gaurav-0 nexus-mcp aed0026e7ac1f23dc940e46e9fd3a2da6904f914. Affected by this issue is the function childprocess.exec of the file src/auth/browser.ts of the component nexusreauth MCP tool. The manipulation of the argument url results in command injection. The…
When was CVE-2026-94031 disclosed?
CVE-2026-94031 was first published in the National Vulnerability Database on September 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-94031?
CVE-2026-94031 has a CVSS v3 base score of 6.3 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-94031?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-94031, 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.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-94031
Is Your Infrastructure Affected by CVE-2026-94031?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.