What is CVE-2025-46339?

CVE-2025-46339 is a medium-severity vulnerability in Freshrss, classified under CWE-349. CVSS score: 4.3/10. Published 2025-06-04.

How severe is CVE-2025-46339?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2025-46339 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Freshrss

CVE-2025-46339

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.

EPSS: 0.002 (5.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Freshrss — versions < 1.26.2

Weakness classification (CWE)

CWE-349

Public proof-of-concept exploits

seyrenus/trace-release

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2025-46339?: CVE-2025-46339 is a medium-severity vulnerability in Freshrss, classified under CWE-349. CVSS score: 4.3/10. Published 2025-06-04.
How severe is CVE-2025-46339?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2025-46339 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.