CVE-2026-7221 TencentCloudBase CloudBase-MCP open-url API Endpoint interactive-server.ts openUrl server-side request forgery
Remote attackers can exploit an SSRF vulnerability in the openUrl function to access internal resources or bypass security controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-7221?
CVE-2026-7221 is a medium-severity server-side request forgery vulnerability in TencentCloudBase CloudBase-MCP, published on 28 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in TencentCloudBase CloudBase-MCP up to 2.17.0. Affected is the function openUrl of the file mcp/src/interactive-server.ts of the component open-url API Endpoint. The manipulation of the argument req.body.url results in server-side request forgery. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version 2.17.1 is able to address this issue. The patch is identified as 3f678a1e7bd400cd76469d61024097d4920dc6b5. It is recommended to upgrade the affected component.
Weakness: CWE-918
Which versions are affected by CVE-2026-7221?
How do I fix CVE-2026-7221?
No fix has been published for CVE-2026-7221 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-2026-7221 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7221 exists.
Sources
Also known as GHSA-xq6p-pm3c-f228.