CVE-2026-42180

Lemmy is a link aggregator and forum for the fediverse. Prior to version 0.19.18, Lemmy allows an authenticated low-privileged user to create a link post through POST /api/v3/post. When a post is created in a public community, the backend asynchronously sends a Webmention to the attacker-controll...

CVE-2026-42181 Lemmy: SSRF and internal image disclosure in post link metadata via unvalidated og:image

Lemmy is a link aggregator and forum for the fediverse. Prior to version 0.19.18, Lemmy fetches metadata for user-supplied post URLs and, under the default StoreLinkPreviews image mode, downloads the preview image through local pict-rs. While the top-level page URL is checked against internal IP...

Lemmy 代码问题漏洞

Lemmy is open-source software developed by Lemmy for building social news aggregators and web forums. Versions of Lemmy prior to 0.19.18 had code vulnerabilities. These vulnerabilities stemmed from the og:image URL being extracted without being restricted by the internal IP range, which could lea...

CVE-2026-33693

Lemmy is a link aggregator and forum for the fediverse. Prior to version 0.7.0-beta.9, the v4isinvalid function in activitypub-federation-rust src/utils.rs does not check for Ipv4Addr::UNSPECIFIED 0.0.0.0. An unauthenticated attacker controlling a remote domain can point it to 0.0.0.0, bypass the...

CVE-2026-29178 Lemmy: Unauthenticated SSRF via file_type query parameter injection in image endpoint

Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypubfederation, a framework for ActivityPub federation in Rust. Prior to version 0.19.16, the GET /api/v4/image/filename endpoint is vulnerable to unauthenticated SSRF...

EUVD-2025-4082

Malicious code in bioql PyPI...

CVE-2025-25194

Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypubfederation, a framework for ActivityPub federation in Rust. This vulnerability, which is present in versions 0.6.2 and prior of activitypubfederation and versions 0.19...

CVE-2025-25194

Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypubfederation, a framework for ActivityPub federation in Rust. This vulnerability, which is present in versions 0.6.2 and prior of activitypubfederation and versions 0.19...

CVE-2025-25194 Server-Side Request Forgery (SSRF) in activitypub_federation

Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypubfederation, a framework for ActivityPub federation in Rust. This vulnerability, which is present in versions 0.6.2 and prior of activitypubfederation and versions 0.19...

CVE-2025-25194 Server-Side Request Forgery (SSRF) in activitypub_federation

Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypubfederation, a framework for ActivityPub federation in Rust. This vulnerability, which is present in versions 0.6.2 and prior of activitypubfederation and versions 0.19...

CVE-2025-25194 Server-Side Request Forgery (SSRF) in activitypub_federation

Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypubfederation, a framework for ActivityPub federation in Rust. This vulnerability, which is present in versions 0.6.2 and prior of activitypubfederation and versions 0.19...

CVE-2024-23649

Lemmy is a link aggregator and forum for the fediverse. Starting in version 0.17.0 and prior to version 0.19.1, users can report private messages, even when they're neither sender nor recipient of the message. The API response to creating a private message report contains the private message...