CVE-2026-5603
CVE-2026-5603 is a medium-severity vulnerability with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- CVSS v2: 4.3
- CVSS v4: 1.9
- EPSS exploit prediction: 1% (53rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-19136
- Weakness: CWE-77
- Published:
- Last modified:
Description
A vulnerability was identified in elgentos magento2-dev-mcp up to 1.0.2. The affected element is the function executeMagerun2Command of the file src/index.ts. Such manipulation leads to os command injection. An attack has to be approached locally. The exploit is publicly available and might be used. The name of the patch is aa1ffcc0aea1b212c69787391783af27df15ae9d. A patch should be applied to remediate this issue.
Frequently asked questions
- What is CVE-2026-5603?
- A vulnerability was identified in elgentos magento2-dev-mcp up to 1.0.2. The affected element is the function executeMagerun2Command of the file src/index.ts. Such manipulation leads to os command injection. An attack has to be approached locally. The exploit is publicly available and might be used. The name of the patch is aa1ffcc0aea1b212c69787391783af27df15ae9d. A patch should be applied to remediate this issue.
- How severe is CVE-2026-5603?
- CVE-2026-5603 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2026-5603 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-5603?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-5603 have an EU (EUVD) identifier?
- Yes. CVE-2026-5603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19136.
- When was CVE-2026-5603 published?
- CVE-2026-5603 was published on 2026-04-05 and last updated on 2026-06-17.
References
- https://github.com/elgentos/magento2-dev-mcp/
- https://github.com/elgentos/magento2-dev-mcp/commit/aa1ffcc0aea1b212c69787391783af27df15ae9d
- https://github.com/elgentos/magento2-dev-mcp/issues/4
- https://github.com/elgentos/magento2-dev-mcp/pull/5
- https://github.com/user-attachments/files/25895777/magento2-dev-mcp_bug.pdf
- https://vuldb.com/submit/784864
- https://vuldb.com/vuln/355395
- https://vuldb.com/vuln/355395/cti
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