Executive brief
NocoBase, an open-source no-code development platform, contains a security flaw that allows administrators to force the server to make unauthorized network requests. By exploiting this, an attacker could probe the company's internal network, scan for open ports on private servers, or steal sensitive cloud credentials (IAM roles) from the hosting environment. This could lead to a broader breach of the organization's cloud infrastructure or internal data services.
Technical details
A Server-Side Request Forgery (SSRF) vulnerability exists in NocoBase's 'serverRequest' wrapper, which handles outbound HTTP requests for workflow nodes, custom buttons, and AI plugins. The application fails to enforce outbound restrictions by default unless the 'SERVER_REQUEST_WHITELIST' environment variable is explicitly configured. An authenticated administrator can provide malicious URLs targeting loopback addresses (127.0.0.1), private RFC-1918 networks, or cloud metadata services (e.g., 169.254.169.254). This allows for internal port scanning, host discovery, and the theft of IAM credentials. While version 2.1.18 introduced logging warnings for such requests, a full fix requires configuring the whitelist or upgrading to a version that implements stricter default blocking.
Affected products
- NocoBase NocoBase <= 2.1.20
Timeline
- 2026-05-22: disclosed: Privately reported to vendor
- 2026-07-01: patched: Initial mitigation PR merged to main branch
- 2026-07-07: advisory: CVE published and NVD record created