{"action":"Upgrade activitypub_federation to 0.7.0-beta.9 or later.","affected":[{"fixed":"0.7.0-beta.9","introduced":"0"}],"component":"activitypub_federation","cve_ids":["CVE-2026-33693"],"ecosystem":"crates.io","epss":0.00373,"exploited":false,"fixed_versions":["0.7.0-beta.9"],"ghsa_id":"GHSA-q537-8fr5-cw35","id":"tcs_01M5KF2C18SZKM9EV9CD922GC7","modified_at":"2026-04-02T13:44:32.200396077Z","published_at":"2026-03-25T20:23:38Z","references":["https://osv.dev/vulnerability/GHSA-q537-8fr5-cw35","https://github.com/LemmyNet/lemmy/security/advisories/GHSA-q537-8fr5-cw35","https://nvd.nist.gov/vuln/detail/CVE-2026-33693","https://github.com/LemmyNet/activitypub-federation-rust/commit/4ae8532b17bc35755240b7f55d4a5b7665351599","https://github.com/LemmyNet/activitypub-federation-rust","https://github.com/advisories/GHSA-7723-35v7-qcxw"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GHSA-q537-8fr5-cw35","url":"https://osv.dev/vulnerability/GHSA-q537-8fr5-cw35"}],"summary":"Activitypub-Federation has SSRF via 0.0.0.0 bypass in activitypub-federation-rust v4_is_invalid()"}