Cross-Site Scripting and Privilege Escalation in FreshRSS by FreshRSS Team
CVE-2025-57769

5.3MEDIUM

Key Information:

Vendor

Freshrss

Status
Freshrss
Vendor
CVE Published:
29 September 2025

What is CVE-2025-57769?

FreshRSS is a popular self-hosted RSS aggregator that has reported a design flaw in versions prior to 1.27.0. The vulnerability allows an attacker to deceive users into executing arbitrary JavaScript code. By exploiting iframe embedding capabilities, malicious actors can obscure key UI elements, such as the 'promote user' button, resulting in unauthorized user elevation. Additionally, users may be manipulated to drag content into the UserJS text area, leading to Cross-Site Scripting (XSS) exploits. FreshRSS has addressed this issue in version 1.27.0, recommending immediate updates for affected users.

Affected Version(s)

FreshRSS < 1.27.0

References

https://github.com/FreshRSS/FreshRSS/security/advisories/...
x_refsource_CONFIRM
https://github.com/FreshRSS/FreshRSS/pull/7677
x_refsource_MISC
https://github.com/FreshRSS/FreshRSS/releases/tag/1.27.0
x_refsource_MISC

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-57769 : Cross-Site Scripting and Privilege Escalation in FreshRSS by FreshRSS Team