CVE-2023-50717

Attacker can upload a html file with malicious content. If user tries to open that file in browser malicious scripts can be executed leading Stored XSS(Cross-Site Script) attack.

PoC

NocoDB was configured using the Release Binary Noco-macos-arm64, and nocodb version 0.202.9 (currently the latest version) was used.
binary hash infos: md5(164b727f287af56168bc16fba622d0b4) / sha256(43e8e97f4c5f5330613abe071a359f84e4514b7186f92954b678087c37b7832e)

1. Run the binary to start the server and access the arbitrary table dashboard.

Here, used the default Features table.

2. Click + in the table field header to add an attachment field.

3. Click the Add File(s) button to select and upload files.

Here, test.html containing <script>alert(document.domain)</script> was uploaded.

4. Check the uploaded file path.

<img width="1163" alt="image" src="https://user-images.githubusercontent.com/86613161/287473337-b1c7c781-2fb5-4bd0-b464-dbd3d4158f04.png"

5. Access the uploaded file path.

When the file path is accessed, the <script>alert(document.domain)</script> script statement contained in the file is executed and the server host appears in the alert message.

This allows remote attacker to execute JavaScript code in the context of the user accessing the vector. An attacker could have used this vulnerability to execute requests in the name of a logged-in user or potentially collect information about the attacked user by displaying a malicious form.

Untrusted input is rendered as active markup in a victim's browser, which can run script in their session. Typical impact: session or credential theft, and actions taken as the user.

CVE-2023-50717 has a CVSS score of 5.7 (Medium). The vector is network-reachable, low privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (0.202.10); upgrading removes the vulnerable code path.

Kodem intelligence

1. What is CVE-2023-50717? CVE-2023-50717 is a medium-severity cross-site scripting (XSS) vulnerability in nocodb (npm), affecting versions >= 0.202.6, <= 0.202.9. It is fixed in 0.202.10. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
2. How severe is CVE-2023-50717? CVE-2023-50717 has a CVSS score of 5.7 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of nocodb are affected by CVE-2023-50717? nocodb (npm) versions >= 0.202.6, <= 0.202.9 is affected.
4. Is there a fix for CVE-2023-50717? Yes. CVE-2023-50717 is fixed in 0.202.10. Upgrade to this version or later.
5. Is CVE-2023-50717 exploitable, and should I be worried? Whether CVE-2023-50717 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
6. What actually determines whether CVE-2023-50717 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.
7. How do I fix CVE-2023-50717? Upgrade nocodb to 0.202.10 or later.

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