🛡️ CVE-2025-25194
🟡 CVSS 4.0 — Medium ✅ No Known Exploit CWE-918 NVD
4.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypub_federation, a framework for ActivityPub federation in Rust. This vulnerability, which is present in versions 0.6.2 and prior of activitypub_federation and versions 0.19.8 and prior of Lemmy, allows a user to bypass any predefined hardcoded URL path or security anti-Localhost mechanism and perform an arbitrary GET request to any Host, Port and URL using a Webfinger Request. As of time of publication, a fix has not been made available.

Details

Severity Medium
CVSS Score 4.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
CWE CWE-918
Public Exploit ✅ No
Source NVD
Published 2025-02-10
Updated 2026-06-02
Modified 2026-04-02
Fix URL N/A

Affected Packages

Software From version Fixed in
activitypub-federation — —
unknown — —

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