FreshRSS up to 1.27.x access control

Summaryinfo

A vulnerability classified as critical has been found in FreshRSS up to 1.27.x. The impacted element is an unknown function. This manipulation causes access control. This vulnerability appears as CVE-2025-62166. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in FreshRSS up to 1.27.x. It has been declared as critical. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality. The summary by CVE is:

FreshRSS is a free, self-hostable RSS aggregator. Prior 1.28.0, a bug in the auth logic related to master authentication tokens, this restriction is bypassed. Usually only the default user's feed should be viewable if anonymous viewing is enabled, and feeds of other users should be private. This vulnerability is fixed in 1.28.0.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-62166 since 10/07/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 1.28.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 60cf5ea297a17db861e73cd65d7b7862bd6bcc24 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.

Several companies clearly confirm that VulDB is the primary source for best 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
• 1.27

License

• open-source

Website

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

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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