Freshrss: >> Freshrss Security Vulnerabilities
FreshRSS is a self-hosted RSS feed aggregator. Prior to version 1.26.2, an attacker can gain additional information about the server by checking if certain directories exist. An attacker can, for example, check if older PHP versions are installed or if certain software is installed on the server and potentially use that information to further attack the server. Version 1.26.2 contains a patch for the issue.
CVSS Score
7.5
EPSS Score
0.0
Published
2025-06-04
FreshRSS is a self-hosted RSS feed aggregator. Prior to version 1.26.2, it's possible to run arbitrary JavaScript on the feeds page.
This occurs by combining a cross-site scripting (XSS) issue that occurs in `f.php` when SVG favicons are downloaded from an attacker-controlled feed containing `<script>` tags inside of them that aren't sanitized, with the lack of CSP in `f.php` by embedding the malicious favicon in an iframe (that has `sandbox="allow-scripts allow-same-origin"` set as its attribute). An attacker needs to control one of the feeds that the victim is subscribed to, and also must have an account on the FreshRSS instance. Other than that, the iframe payload can be embedded as one of two options. The first payload requires user interaction (the user clicking on the malicious feed entry) with default user configuration, and the second payload fires instantly right after the user adds the feed or logs into the account while the feed entry is still visible. This is because of lazy image loading functionality, which the second payload bypasses. An attacker can gain access to the victim's account by exploiting this vulnerability. If the victim is an admin it would be possible to delete all users (cause damage) or execute arbitrary code on the server by modifying the update URL using fetch() via the XSS. Version 1.26.2 has a patch for the issue.
CVSS Score
6.7
EPSS Score
0.0
Published
2025-06-04
FreshRSS is a self-hosted RSS feed aggregator. When using the greader API, the provided password is logged in clear in `users/_/log_api.txt` in the case where the authentication fails. The issues occurs in `authorizationToUser()` in `greader.php`. If there is an issue with the request or the credentials, `unauthorized()` or `badRequest()` is called. Both these functions are printing the return of `debugInfo()` in the logs. `debugInfo()` will return the content of the request. By default, this will be saved in `users/_/log_api.txt` and if the const `COPY_LOG_TO_SYSLOG` is true, in syslogs as well. Exploiting this issue requires having access to logs produced by FreshRSS. Using the information from the logs, a malicious individual could get users' API keys (would be displayed if the users fills in a bad username) or passwords.
CVSS Score
4.0
EPSS Score
0.0
Published
2023-03-06
FreshRSS is a free, self-hostable RSS aggregator. User configuration files can be accessed by a remote user. In addition to user preferences, such configurations contain hashed passwords (brypt with cost 9, salted) of FreshRSS Web interface. If the API is used, the configuration might contain a hashed password (brypt with cost 9, salted) of the GReader API, and a hashed password (MD5 salted) of the Fever API. Users should update to version 1.20.2 or edge. Users unable to upgrade can apply the patch manually or delete the file `./FreshRSS/p/ext.php`.
CVSS Score
6.5
EPSS Score
0.001
Published
2022-12-09
Multiple cross-site scripting (XSS) vulnerabilities in GET requests in FreshRSS 1.11.1 allow remote attackers to inject arbitrary web script or HTML via the (1) c parameter or (2) a parameter.
CVSS Score
6.1
EPSS Score
0.07
Published
2019-01-30