CVE-2026-86122CWE-918ssrf

CVE-2026-86122

Medium · published September 5, 2026

CVSS v3.1
5.0
EPSS
0%
Percentile
30.0
In the wild
Unconfirmed
What it is

Rowboat through 0.9.1 fails to validate custom MCP server and webhook URLs, allowing authenticated users to configure arbitrary destinations. Attackers can point these URLs at internal services and cloud metadata endpoints to perform server-side request forgery and enumerate internal network topology.

The record
Technical detail
CVSS v3.1
5.0 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
EPSS
0.00372 · 30.0th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-05T14:16Z
References (5)
https://github.com/rowboatlabs/rowboat · [email protected]https://github.com/rowboatlabs/rowboat/blob/v0.9.1/apps/rowboat/src/application/lib/agents-runtime/agent-tools.ts · [email protected]https://github.com/rowboatlabs/rowboat/blob/v0.9.1/apps/rowboat/src/application/use-cases/projects/add-custom-mcp-server.use-case.ts · [email protected]https://github.com/rowboatlabs/rowboat/issues/621 · [email protected]https://www.vulncheck.com/advisories/rowboat-through-0.9.1-server-side-request-forgery-via-custom-mcp-server · [email protected]
EPSS history
Timeline
  • 07 SEP 03:36Z
    EPSS moved — → 0%
    epss
  • 05 SEP 09:59Z
    Rowboat through 0.9.1 Server-Side Request Forgery via Custom MCP Server
    cvelistv5