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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.

PUBLISHED Reserved 2026-04-27 | Published 2026-04-28 | Updated 2026-04-28 | Assigner VulDB




MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
HIGH: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
HIGH: 7.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
7.5AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C

Problem types

Server-Side Request Forgery

Product status

2.0
affected

2.1
affected

2.2
affected

2.3
affected

2.4
affected

2.5
affected

2.6
affected

2.7
affected

2.8
affected

2.9
affected

2.10
affected

2.11
affected

2.12
affected

2.13
affected

2.14
affected

2.15
affected

2.16
affected

2.17.0
affected

2.17.1
unaffected

Timeline

2026-04-27:Advisory disclosed
2026-04-27:VulDB entry created
2026-04-27:VulDB entry last update

Credits

BruceJin (VulDB User) reporter

References

vuldb.com/vuln/359821 (VDB-359821 | TencentCloudBase CloudBase-MCP open-url API Endpoint interactive-server.ts openUrl server-side request forgery) vdb-entry technical-description

vuldb.com/vuln/359821/cti (VDB-359821 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/submit/802230 (Submit #802230 | TencentCloudBase CloudBase-MCP 2.16.1 Server-Side Request Forgery) third-party-advisory

github.com/TencentCloudBase/CloudBase-MCP/issues/509 exploit issue-tracking

github.com/TencentCloudBase/CloudBase-MCP/pull/510 issue-tracking patch

github.com/...ommit/3f678a1e7bd400cd76469d61024097d4920dc6b5 patch

github.com/...ntCloudBase/CloudBase-MCP/releases/tag/v2.17.1 patch

github.com/TencentCloudBase/CloudBase-MCP/ product

cve.org (CVE-2026-7221)

nvd.nist.gov (CVE-2026-7221)

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