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TI-2026-10741 Aliases CVE-2026-12516GHSA-9jc6-q7qm-59qj

Fediverse Embeds < 1.5.8 - Unauthenticated SSRF via Media Proxy

Priority MEDIUM 63Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated media-proxying endpoint, allowing anonymous users to make the site fetch arbitrary URLs, including internal and private-network addresses, and read back the response body. This results in a full-read Server-Side Request Forgery and open proxy.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00313 24th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Fediverse Embeds (Unknown): 1.5.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownFediverse Embedsbefore 1.5.81.5.8Patch availableCNA
  • Fediverse Embeds VendorUnknown Affected before 1.5.8 Fixed in 1.5.8 Patch available CNA

Remediation

  • Fix · CNA Fediverse Embeds (Unknown) Fixed in 1.5.8

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Fediverse Embeds 1.5.8

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-10742 Fediverse Embeds < 1.5.8 - Unauthenticated SSRF via Site Info EndpointPriority MEDIUM 63
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-12516
  2. 2026-10-03 Alias added: GHSA-9jc6-q7qm-59qj

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences