lemmynet Lemmy Vulnerabilities

Lemmynet Lemmy vulnerabilities.

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8 May 2026

Server-Side Request Forgery Vulnerability in Lemmy Link Aggregator
CVE-2026-42180
LemmynetLemmy6.3MEDIUM
Open Graph Image Fetching Vulnerability in Lemmy by LemmyNet
CVE-2026-42181
LemmynetLemmy6.5MEDIUM

27 March 2026

SSRF Vulnerability in Lemmy's ActivityPub Federation Component
CVE-2026-33693
LemmynetLemmy6.5MEDIUM

6 March 2026

Server-Side Request Forgery Vulnerability in Lemmy by LemmyNet
CVE-2026-29178
LemmynetLemmy7.7HIGH

10 February 2025

Server-Side Request Forgery Vulnerability in Lemmy Forum by LemmyNet
CVE-2025-25194
LemmynetLemmy4MEDIUM

24 January 2024

Any authenticated user may obtain private message details from other users on the same instance
CVE-2024-23649
LemmynetLemmy7.5HIGH