Path Traversal in Firecrawl Firecrawl-Mcp-Server
CVE-2026-85606
firecrawl-mcp-server 3.20.2 contains an arbitrary local file read vulnerability in the firecrawl_parse tool that accepts unconstrained filePath arguments without directory containment validation. Attackers can supply absolute paths or directory traversal sequences to read sensitive files like credentials and environment variables, which are then uploaded and returned to the model context.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.009 (58.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.009 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/firecrawl/firecrawl-mcp-server (product)
- github.com/firecrawl/firecrawl-mcp-server/blob/v3.24.1/src/index.ts (technical-description)
- github.com/firecrawl/firecrawl-mcp-server/issues/306 (issue-tracking)
- www.vulncheck.com/advisories/firecrawl-mcp-server-3.20.2-arbitrary-local-file-r… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-85606?
- CVE-2026-85606 is a high-severity vulnerability in Firecrawl Firecrawl-Mcp-Server, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-09-04.
- How severe is CVE-2026-85606?
- High severity. CVSS v3 base score is 7.5 out of 10.