SSRF in Jae-Jae Fetcher-Mcp
CVE-2026-74858
A vulnerability has been found in jae-jae fetcher-mcp up to 0.3.9. Impacted is the function fetch_url/fetch_urls of the file /latest/meta-data/iam/security-credentials/ of the component URL Validation. Such manipulation leads to server-side request forgery. It is possible to launch the attack remotely. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: SSRF (Server-Side Request Forgery)
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Jae-jae Fetcher-mcp — versions 0.3.0, 0.3.1, 0.3.2
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (issue-tracking, broken-link)
- cna@vuldb.com (product)
Frequently asked questions
- What is CVE-2026-74858?
- CVE-2026-74858 is a medium-severity vulnerability in Jae-Jae Fetcher-Mcp, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.3/10. Published 2026-08-17.
- How severe is CVE-2026-74858?
- Medium severity. CVSS v3 base score is 6.3 out of 10.