VDB-359821 · Submit #802230 · CVE-2026-7221

TencentCloudBase CloudBase-MCP up to 2.17.0 open-url API Endpoint interactive-server.ts openUrl req.body.url server-side request forgery

Summaryinfo

A vulnerability was found in TencentCloudBase CloudBase-MCP up to 2.17.0. It has been rated as critical. Affected by this vulnerability is the function openUrl of the file mcp/src/interactive-server.ts of the component open-url API Endpoint. This manipulation of the argument req.body.url causes server-side request forgery. This vulnerability is handled as CVE-2026-7221. The attack can be initiated remotely. Additionally, an exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in TencentCloudBase CloudBase-MCP up to 2.17.0. Affected by this vulnerability 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 with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-7221. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Upgrading to version 2.17.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 3f678a1e7bd400cd76469d61024097d4920dc6b5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Artificial Intelligence Software

Vendor

TencentCloudBase

Name

CloudBase-MCP

Version

License

open-source

Website

Product: https://github.com/TencentCloudBase/CloudBase-MCP/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: CloudBase-MCP 2.17.1
Patch: 3f678a1e7bd400cd76469d61024097d4920dc6b5

Timelineinfo

04/27/2026 Advisory disclosed
04/27/2026 +0 days VulDB entry created
04/27/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 509
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-7221 (🔒)
GCVE (CVE): GCVE-0-2026-7221
GCVE (VulDB): GCVE-100-359821
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/27/2026 17:40
Changes: 04/27/2026 17:40 (65)
Complete: 🔍
Submitter: BruceJin
Cache ID: 216::103

Submitinfo

Accepted

Submit #802230: TencentCloudBase CloudBase-MCP 2.16.1 Server-Side Request Forgery (by BruceJin)