23 matches found
EUVD-2026-42952
PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.2.2, server-side-rendered video watch pages embed a schema.org JSON-LD block by JSON.stringify-ing video metadata without escaping less-than, greater-than, or slash characters, allowing a value containing the byte sequence...
CVE-2026-58593
NodeBB is affected by CVE-2026-58593 where inbound ActivityPub objects are not correctly bound to the authenticated remote actor. The middleware verifies the HTTP-signature actor and origin of object.id but does not validate that attributedTo corresponds to the sender, treating attributedTo as a ...
CVE-2026-33693 Lemmy's Activitypub-Federation has SSRF via 0.0.0.0 bypass in activitypub-federation-rust v4_is_invalid()
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-2026-33693 Lemmy's Activitypub-Federation has SSRF via 0.0.0.0 bypass in activitypub-federation-rust v4_is_invalid()
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-2026-33693
Lemmy’s Activitypub-Federation vulnerable component: Rust-based v4_is_invalid() in activitypub_federation-rust fails to check IPv4Addr::UNSPECIFIED (0.0.0.0). An unauthenticated attacker controlling a remote domain could direct 0.0.0.0 and bypass SSRF protections, reaching localhost services on t...
CVE-2026-33693 Lemmy's Activitypub-Federation has SSRF via 0.0.0.0 bypass in activitypub-federation-rust v4_is_invalid()
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...
Activitypub-Federation has SSRF via 0.0.0.0 bypass in activitypub-federation-rust v4_is_invalid()
Summary 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 SSRF protection introduced by the fix for CVE-2025-25194 GHSA-7723-35v7-qcxw,...
GHSA-Q537-8FR5-CW35 Activitypub-Federation has SSRF via 0.0.0.0 bypass in activitypub-federation-rust v4_is_invalid()
Summary 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 SSRF protection introduced by the fix for CVE-2025-25194 GHSA-7723-35v7-qcxw,...
Activitypub-Federation has SSRF via 0.0.0.0 bypass in activitypub-federation-rust v4_is_invalid()
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 SSRF protection introduced by the fix for CVE-2025-25194 GHSA-7723-35v7-qcxw, and reac...
📄 activitypub-federation-rust 0.7.1 Server-Side Request Forgery
activitypub-federation-rust versions 0.7.1 and below suffer from a server-side request forgery vulnerability. CVE-2026-33693: SSRF via 0.0.0.0 Bypass in activitypub-federation-rust v4isinvalid CVSS 6.5 Moderate Keywords: SSRF, 0.0.0.0, IP validation bypass, activitypub-federation, Lemmy, Rust,...
CVE-2026-29178
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...
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-2025-53941
Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Versions prior to 0.6.5 allow HTML form elements to be submitted, making the software vulnerable to HTML injection. Version 0.6.5 fixes the issue...
CVE-2025-53941
Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Versions prior to 0.6.5 allow HTML form elements to be submitted, making the software vulnerable to HTML injection. Version 0.6.5 fixes the issue...
The vulnerability of the verify_url_valid() function in the Activitypub-Federation framework, a platform for creating and managing communities in the Lemmy ecosystem, allows attackers to circumvent security restrictions and gain unauthorized access to protected information.
The vulnerability of the verifyurlvalid function in the Activitypub-Federation framework, a platform for creating and managing communities in the Lemmy community, is related to insufficient validation of requests on the server side. Exploiting this vulnerability could allow an attacker to bypass...
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
CVE-2025-25194 describes a Server-Side Request Forgery (SSRF) in Lemmy linked to the activitypub_federation Rust library. The vulnerability allows an attacker to craft a Webfinger-based request that may bypass hardcoded URL/path restrictions and trigger an arbitrary GET to any Host, Port, and URL...
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...