CVE-2026-12517

Fediverse Embeds < 1.5.8 - Unauthenticated SSRF via Site Info Endpoint

CVSS 5.3 MEDIUMEPSS 0.1%

Vexday Risk Score

33Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Proof of concept

Public proof of concept exists, but not yet automated.

CVSS 5.3EPSS 0.1%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

09 Jul 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated site-info endpoint before fetching it, allowing anonymous users (the gating nonce is exposed on public pages carrying an embed) to make the site request internal and private-network URLs and read back the parsed page metadata. This is a Server-Side Request Forgery.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

Unknown · Fediverse Embeds

public PoCs found — 1

cve_referencewpscan.com/vulnerability/460a996f-e27d-47e8-9d68-9e6be93100c0/unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

https://wpscan.com/vulnerability/460a996f-e27d-47e8-9d68-9e6be93100c0/