Error HTTP 415 when cURL from GitHub to Websites Hosted in cPanel

dhanyg

• October 16, 2025 02:47

Hi, I encountered a 415 issue when using curl to access a website hosted in cPanel from GitHub. The error message: 415 Unsupported Media Type openresty/1.27.1.1

There are Imunify360 and CSF in the server, but I think CSF and Imunify360 cannot handle whitelisting thousands of GitHub's IPs. Any other idea?

• 

  cPRex Jurassic Moderator

  • October 16, 2025 13:07

  Hey there!  I'll post the reply from the other thread here as well.

  Since this is from a separate area coming into cPanel you may want to check more generic details such as this information about the media type setting:

  https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/415

  but disabling the firewall temporarily would also be a valid test to see if that is related.

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• 

  TechAmigo Support

  • October 17, 2025 05:14

  Hello Dhanyg,

  It seems the 415 "Unsupported Media Type" error is likely not a firewall/blocking issue, but rather a request format or media type problem that the web server/proxy doesn't accept.

  We'll suggests few steps to ensure it's type. 

  • First check it's Content-Type Header and ensure that you're sending the correct Content-Type

  curl -H "Content-Type: application/json" -X POST https://yoursite.com/endpoint

  • Also, check for missing required headers. Some APIs require specific header like Accept, User-Agent, etc.
    
    
  • In-addition, if it's actually a blocking issue through Imunify360,

  It might be blocking based on request patterns. However, temporarily disable Imunify360's WAF rule and confirm it.

  Thank you

  Regards,
  TechAmigo Support

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  dhanyg

  • October 22, 2025 01:03

  Hi, thanks for the advice. I already gave a suggestion about additional header within the request, but still didn't work. Let me try temporarily disabling Imunify360. 

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