Csp Nonce Not Working. I have added the following response header: content-security-policy:

I have added the following response header: content-security-policy: default-src 'nonce- Jul 12, 2017 · It looks like you're not enclosing the nonce value in single quotes -- instead of nonce-%s it should be 'nonce-%s' in your policy. Nov 18, 2021 · I've been unable to get a nonce included in the CSP header generated by django-csp. Jul 15, 2023 · What to do, to enable your Angular application to use style-src: nonce in a CSP for stricter security rules Aug 12, 2020 · I have a web server that generates a http/html response to a GET request. Policy Delivery. Mar 9, 2022 · That error means you are trying to run a script inline, which is disallowed by your current CSP configuration. Feb 22, 2021 · I am setting content security policy up, and a vendor library (bootstap) is setting styles inline to display a dialog and Edge/Chromium is saying that the change has been declined. Apr 8, 2021 · 8 Only style and script are nonceable elements in CSP level 2, https://www. g. by the client. My CSP header (e Dec 15, 2025 · The HTTP Content-Security-Policy (CSP) script-src directive specifies valid sources for JavaScript. (recommended) Disable CSP (not recommended) Jul 25, 2025 · Hi @nikhilchinchane! I'm Dosu and I’m helping the ant-design team. Jan 12, 2026 · Good to know: For dynamic rendering scenarios, you can still generate nonces with proxy if needed, combining both SRI integrity attributes and nonce-based CSP approaches. Apr 8, 2022 · Not sure if that explanation makes sense 😅 Alternatively you could also just set the nonce in your UI as that’s probably setting the nonce header? Or alternatively, we could also introduce the nonce on the flow object and require the UI to set it as an HTTP header - would not work for SPAs though, probably. Practical guide to using cryptographic hashes and nonces in Content Security Policy. org/TR/CSP2/#script-src-the-nonce-attribute. Learn how to implement these techniques to allow specific inline scripts and styles while keeping strong security protections. com Jul 25, 2025 · Ant Design v5 supports passing a CSP nonce via ConfigProvider, and tests confirm that all dynamically generated <style> tags should have the nonce attribute when you use the csp prop—this includes your usage pattern with DatePicker and Button components. Mar 20, 2024 · Despite configuring the CSP using the plugin in the netlify. See full list on content-security-policy. Since you're using the Google example you probably know about the other directives necessary to make the policy safe (e. I've followed the instructions in the docs, and everything else seems to be working - other than getting a nonce Mar 20, 2024 · No Nonce Set: Despite these configurations, there is no nonce set to the scripts when I inspect the deployed site, and it behaves as if CSP is not enabled at all. May 31, 2019 · As previously noted nonces won't work (at least at the moment - January of 2023) for inline JS event handlers - but you can use the less safe unsafe-hashes option if you can't or don't want to change your inline script. Understanding the conflict between CSP nonce and unsafe-inline scripts, and how to resolve it for better web security. Here are the steps I’ve taken and the issues I’ve encountered: Apr 8, 2022 · Not sure if that explanation makes sense 😅 Alternatively you could also just set the nonce in your UI as that’s probably setting the nonce header? Or alternatively, we could also introduce the nonce on the flow object and require the UI to set it as an HTTP header - would not work for SPAs though, probably. The nonce is generated dynamically and changed on page loads. This includes not only URLs loaded directly into <script> elements, but also things like inline script event handlers (onclick) and XSLT stylesheets which can trigger script execution. object-src and base-uri), but just in case, make sure to use a tool like the CSP Evaluator Sep 9, 2021 · A unique nonce has to be generated for every pages load The architecture to roll-out a nonce-based CSP is generally used in custom web applications - and would be very complex for a Wordpress site, as I imagine that you may be using Caching / CDN. Nov 14, 2020 · The CSP needs to be tweaked a little but is partially working. There is one other workaround to this problem called unsafe-inline, but as its name suggests it is not really a good idea to use it (except in specific conditions). With all that being said, CSP should not be relied upon as the only defensive mechanism against XSS. You have two options: Fix the script that is trying to execute the inline. Ant Design v5 supports passing a CSP nonce via ConfigProvider, and tests confirm that all dynamically generated <style> tags should have the nonce attribute when you use the csp prop—this includes your usage pattern with DatePicker and Button components. Here are the steps I’ve taken and the issues I’ve encountered: May 31, 2019 · As previously noted nonces won't work (at least at the moment - January of 2023) for inline JS event handlers - but you can use the less safe unsafe-hashes option if you can't or don't want to change your inline script.

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