CVE-2026-47377

The client-side hashRedirect plugin called window.location.replace() on a path extracted from the URL hash fragment after only checking hashPath.startsWith('/'). Protocol-relative URLs (//attacker.com/…) also satisfy that check, so a crafted link such as https://nocodb.example/#//attacker.com/phishing silently redirected visitors to an attacker-controlled origin.

Details

In packages/nc-gui/plugins/hashRedirect.client.ts, the plugin extracted the hash content and normalised it into cleanUrl:

let cleanUrl = hashPath.startsWith('/') ? hashPath : `/${hashPath}`
if (hashQuery) cleanUrl += `?${hashQuery}`
window.location.replace(cleanUrl)

startsWith('/') returns true for //attacker.com/..., which browsers interpret as a protocol-relative absolute URL. No hostname check was performed before the redirect. The fix adds an early if (/^\/[/\\]/.test(hashPath)) return to reject protocol-relative paths.

Credit

This issue was reported by @fg0x0.

• Open redirect from any NocoDB origin to an attacker-controlled domain.
• No authentication required; the attack lands the victim on an attacker-controlled page that may impersonate a NocoDB login.

Untrusted input controls a URL used for redirection, which can forward users to attacker-controlled sites. Typical impact: phishing and credential harvesting via a trusted domain.

Kodem intelligence

1. What is CVE-2026-47377? CVE-2026-47377 is a medium-severity open redirect vulnerability in nocodb (npm), affecting versions < 2026.04.1. It is fixed in 2026.04.1. Untrusted input controls a URL used for redirection, which can forward users to attacker-controlled sites.
2. Which versions of nocodb are affected by CVE-2026-47377? nocodb (npm) versions < 2026.04.1 is affected.
3. Is there a fix for CVE-2026-47377? Yes. CVE-2026-47377 is fixed in 2026.04.1. Upgrade to this version or later.
4. Is CVE-2026-47377 exploitable, and should I be worried? Whether CVE-2026-47377 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
5. What actually determines whether CVE-2026-47377 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
6. How do I fix CVE-2026-47377? Upgrade nocodb to 2026.04.1 or later.