BaseFortify

Publication date: 2025-09-29

Last updated on: 2025-10-03

Assigner: GitHub, Inc.

Description

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-09-29

Last Modified

2025-10-03

Generated

2026-07-06

AI Q&A

2025-09-30

EPSS Evaluated

2026-07-05

NVD

CVE-2025-54875

Affected Vendors & Products

Vendor	Product	Version / Range
freshrss	freshrss	From 1.16.0 (inc) to 1.27.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CWE-NVD-CWE-noinfo

Attack-Flow Graph

Executive Summary

This vulnerability in FreshRSS versions 1.16.0 through 1.26.3 allows an unprivileged attacker to create a new admin user when registration is enabled. The attacker exploits a hidden field called new_user_is_admin, which is intended for use only in the user management admin page. This flaw enables unauthorized privilege escalation to admin rights. The issue is fixed in version 1.27.0.

Impact Analysis

An attacker exploiting this vulnerability can gain administrative access to the FreshRSS instance without authorization. This can lead to full control over the application, including the ability to modify or delete data, change configurations, and potentially compromise the confidentiality, integrity, and availability of the system.

Mitigation Strategies

To mitigate this vulnerability, immediately upgrade FreshRSS to version 1.27.0 or later where the issue is fixed. Additionally, if registration is enabled, consider disabling it temporarily until the upgrade is applied to prevent unprivileged users from creating new admin accounts.

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