CVE-2025-46339
FreshRSS Favicon Poisoning Vulnerability
Description
FreshRSS is a self-hosted RSS feed aggregator. Prior to version 1.26.2, it's possible to poison feed favicons by adding a given URL as a feed with the proxy set to an attacker-controlled one and disabled SSL verifying. The favicon hash is computed by hashing the feed URL and the salt, whilst not including the following variables: proxy address, proxy protocol, and whether SSL should be verified. Therefore it's possible to poison a favicon of a given feed by simply intercepting the response of the feed, and changing the website URL to one where a threat actor controls the feed favicon. Feed favicons can be replaced for all users by anyone. Version 1.26.2 fixes the issue.
INFO
Published Date :
June 4, 2025, 8:15 p.m.
Last Modified :
Aug. 12, 2025, 3:33 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-46339.
| URL | Resource |
|---|---|
| https://github.com/FreshRSS/FreshRSS/commit/3776e1e48f33e80eb4b674bb64b419caf3b5a4e2 | Patch |
| https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-8f79-3q3w-43c4 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-46339 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-46339
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-46339 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-46339 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 12, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:freshrss:freshrss:*:*:*:*:*:*:*:* versions up to (excluding) 1.26.2 Added Reference Type GitHub, Inc.: https://github.com/FreshRSS/FreshRSS/commit/3776e1e48f33e80eb4b674bb64b419caf3b5a4e2 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-8f79-3q3w-43c4 Types: Exploit, Vendor Advisory -
New CVE Received by [email protected]
Jun. 04, 2025
Action Type Old Value New Value Added Description FreshRSS is a self-hosted RSS feed aggregator. Prior to version 1.26.2, it's possible to poison feed favicons by adding a given URL as a feed with the proxy set to an attacker-controlled one and disabled SSL verifying. The favicon hash is computed by hashing the feed URL and the salt, whilst not including the following variables: proxy address, proxy protocol, and whether SSL should be verified. Therefore it's possible to poison a favicon of a given feed by simply intercepting the response of the feed, and changing the website URL to one where a threat actor controls the feed favicon. Feed favicons can be replaced for all users by anyone. Version 1.26.2 fixes the issue. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-349 Added Reference https://github.com/FreshRSS/FreshRSS/commit/3776e1e48f33e80eb4b674bb64b419caf3b5a4e2 Added Reference https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-8f79-3q3w-43c4