Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 4.8 | Medium | 4.0 | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | CNA (VulDB) |
- CISA KEV Not listed.
- EPSS 0.0091, the 60th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
Sources
- GitHub Advisory Database: GHSA-xqv9-qr76-hfq2
- OSV: GHSA-xqv9-qr76-hfq2
- nvd.nist.gov/vuln/detail/CVE-2026-5603
- github.com/elgentos/magento2-dev-mcp/issues/4
- github.com/elgentos/magento2-dev-mcp/pull/5
- github.com/elgentos/magento2-dev-mcp/commit/aa1ffcc0aea1b212c69787391783af27df15ae9d
- github.com/elgentos/magento2-dev-mcp
- github.com/user-attachments/files/25895777/magento2-dev-mcp_bug.pdf
- vuldb.com/submit/784864
- vuldb.com/vuln/355395
- vuldb.com/vuln/355395/cti