CVE-2026-86122 Rowboat through 0.9.1 Server-Side Request Forgery via Custom MCP Server
Authenticated users can exploit unvalidated URLs in Rowboat to access internal services and cloud metadata, enabling network enumeration and data theft.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86122?
CVE-2026-86122 is a medium-severity server-side request forgery vulnerability in rowboatlabs rowboat, published on 5 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-918
Which versions are affected by CVE-2026-86122?
How do I fix CVE-2026-86122?
No fix has been published for CVE-2026-86122 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-86122 being exploited?
There is no known exploitation of CVE-2026-86122 in the wild and no public exploit code.
Sources
Also known as GHSA-jmxm-qmrf-xrpp.