How severe is CVE-2025-46339?

CVE-2025-46339 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-46339 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-46339?

CVE-2025-46339 affects Freshrss. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-46339?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-46339 have an EU (EUVD) identifier?

Yes. CVE-2025-46339 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16931.

When was CVE-2025-46339 published?

CVE-2025-46339 was published on 2025-06-04 and last updated on 2026-06-17.

CVE-2025-46339

CVE-2025-46339 is a medium-severity vulnerability in Freshrss with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-349.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16931
Weakness: CWE-349
Affected product: Freshrss
Published: 2025-06-04
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2025-46339?: CVE-2025-46339 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-46339 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-46339?: CVE-2025-46339 affects Freshrss. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-46339?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-46339 have an EU (EUVD) identifier?: Yes. CVE-2025-46339 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16931.
When was CVE-2025-46339 published?: CVE-2025-46339 was published on 2025-06-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:freshrss:freshrss:*:*:*:*:*:*:*:*

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