Disabled XSRF Protection
Description:
Atlassian Confluence provides users the ability to include themes and external plugins. Some older themes or plugins may require users to disable XSRF Protection as pointed out below:
Some third-party or deprecated Confluence themes will not work with the new Confluence XSRF protection. You may disable XSRF protection to support old themes at the cost of reducing security. - Atlassian Confluence Docs
However, turning off the built-in XSRF Protection in your Confluence instance can open up new attack vectors for bad actors to abuse!
Testing:
In case XSRF Protection is turned off, bad actors could post comments on other user's behalf by just sending them a link to an attacker controlled site that replicates the POST request. The POST request will request the server to create a comment on the victim's behalf without their knowledge.
Remediation:
It is always recommended to upgrade and use the latest version available of Atlassian Confluence.
- Navigate to your Confluence instance and sign in 
- Open your Administrator Settings by clicking on the gear icon next to your profile picture 
- In your side navigation bar, scroll down to Security and open Security Configurations 
- Make sure that XSRF Protection for adding comments is enabled 
- Save your changes 

Potential Impact:
When XSRF-protection is turned off, it is possible for malicious users to target authenticated users by sending them a specially crafted link that'd automatically for example post a comment on the victim's behalf.
References:
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