{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-46697: Fediverse Embeds: Unauthenticated SSRF / open proxy via REST media-proxy endpoint","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-46697","status":"final","version":"1","initial_release_date":"2026-06-11T17:16:03.883Z","current_release_date":"2026-06-11T18:58:07.518Z","revision_history":[{"date":"2026-06-11T17:16:03.883Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Fediverse Embeds embeds fediverse posts on WordPress sites. Prior to version 1.5.8, Fediverse Embeds registered an unauthenticated REST route ftf/media-proxy (includes/Media_Proxy.php) with permission_callback => __return_true that accepted a base64-encoded URL and forwarded it to wp_remote_get($url) without enforcing any allowlist. The plugin's source contained a comment block explicitly acknowledging that the request should be validated against allowed fediverse domains, but in 1.5.7 the validation only set a local $can_download_media flag that was never read. The full response body was echoed back to the caller, so this was a full-read SSRF / open proxy reachable by any anonymous visitor. This issue has been patched in version 1.5.8.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-46697 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-46697"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-46697"},{"category":"external","summary":"https://github.com/stefanbohacek/fediverse-embeds-wordpress-plugin/security/advisories/GHSA-mpq6-hjh3-m543","url":"https://github.com/stefanbohacek/fediverse-embeds-wordpress-plugin/security/advisories/GHSA-mpq6-hjh3-m543"},{"category":"external","summary":"https://github.com/stefanbohacek/fediverse-embeds-wordpress-plugin/commit/2f021faf4dadaccef67eda7b81a0b7ceaef450df","url":"https://github.com/stefanbohacek/fediverse-embeds-wordpress-plugin/commit/2f021faf4dadaccef67eda7b81a0b7ceaef450df"}]},"product_tree":{"branches":[{"category":"vendor","name":"stefanbohacek","branches":[{"category":"product_name","name":"fediverse-embeds-wordpress-plugin","branches":[{"category":"product_version","name":"< 1.5.8","product":{"name":"stefanbohacek fediverse-embeds-wordpress-plugin < 1.5.8","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:stefanbohacek:fediverse-embeds-wordpress-plugin:\\<_1.5.8:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-46697","title":"Fediverse Embeds: Unauthenticated SSRF / open proxy via REST media-proxy endpoint","notes":[{"category":"description","text":"Fediverse Embeds embeds fediverse posts on WordPress sites. Prior to version 1.5.8, Fediverse Embeds registered an unauthenticated REST route ftf/media-proxy (includes/Media_Proxy.php) with permission_callback => __return_true that accepted a base64-encoded URL and forwarded it to wp_remote_get($url) without enforcing any allowlist. The plugin's source contained a comment block explicitly acknowledging that the request should be validated against allowed fediverse domains, but in 1.5.7 the validation only set a local $can_download_media flag that was never read. The full response body was echoed back to the caller, so this was a full-read SSRF / open proxy reachable by any anonymous visitor. This issue has been patched in version 1.5.8.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}