SSRF in 54yyyu Zotero-Mcp
CVE-2026-108583
zotero-mcp 0.10.0 through 0.14.1 contains a server-side request forgery vulnerability that allows attackers to reach internal services because _fetch_embedded_metadata fetches URLs without destination validation. Attackers can steer the agent via prompt injection into calling zotero_add_by_url, causing requests to loopback, private, or link-local hosts directly or via redirects, leaking citation meta-tags and error details.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind/zotero-mcp-generic-url-metadata-ssrf (third-party-advisory)
- github.com/54yyyu/zotero-mcp/blob/v0.14.1/src/zotero_mcp/tools/write.py (technical-description)
- github.com/54yyyu/zotero-mcp/issues/326 (issue-tracking, related)
- www.vulncheck.com/advisories/zotero-mcp-0.10.0-through-0.14.1-ssrf-via-zotero-a… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108583?
- CVE-2026-108583 is a medium-severity vulnerability in 54yyyu Zotero-Mcp, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.2/10. Published 2026-10-10.
- How severe is CVE-2026-108583?
- Medium severity. CVSS v3 base score is 4.2 out of 10.