FreshRSS up to 1.26.x User Management new_user_is_admin access control

Summaryinfo

A vulnerability categorized as critical has been discovered in FreshRSS up to 1.26.x. Affected by this vulnerability is an unknown functionality of the component User Management Handler. Such manipulation of the argument new_user_is_admin leads to access control. This vulnerability is listed as CVE-2025-54875. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in FreshRSS up to 1.26.x. It has been rated as critical. Affected by this issue is an unknown functionality of the component User Management Handler. The manipulation of the argument new_user_is_admin with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

FreshRSS is a free, self-hostable RSS aggregator. In versions 1.16.0 and above through 1.26.3, an unprivileged attacker can create a new admin user when registration is enabled through the use of a hidden field used only in the user management admin page, new_user_is_admin. This is fixed in version 1.27.0.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-54875 since 07/31/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 1.27.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• FreshRSS

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26

Website

• Product: https://github.com/FreshRSS/FreshRSS/

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