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 (Issue 509)

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 HISTORYDIFFRELATEJSONXMLCTI 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. Productinfo Type Artificial Intelligence Software Vendor TencentCloudBase Name CloudBase-MCP Version 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17.0 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 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: 99:04C:101 Submitinfo Accepted Submit #802230: TencentCloudBase CloudBase-MCP 2.16.1 Server-Side Request Forgery (by BruceJin) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸