Vulnerability details

CVE-2026-46697

stefanbohacek fediverse-embeds-wordpress-plugin

Fediverse Embeds: Unauthenticated SSRF / open proxy via REST media-proxy endpoint

CVSS 3.1

7.5High

Official description

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.

CVSS scores

Score	Version	Source	Vector
7.5High	3.1	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`

Affected products

Vendor	Product	Versions	Source
stefanbohacek	fediverse-embeds-wordpress-plugin	< 1.5.8	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/stefanbohacek/fediverse-embeds-wordpress-plugin/security/advisories/GHSA-mpq6-hjh3-m543 x_refsource_CONFIRM
https://github.com/stefanbohacek/fediverse-embeds-wordpress-plugin/commit/2f021faf4dadaccef67eda7b81a0b7ceaef450df x_refsource_MISC

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Details

Published: 2026-06-11
Last updated: 2026-06-11
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.23%

Probability of exploitation in 30 days

14.4%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-918
Server-Side Request Forgery (SSRF)