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Back to active CVEs
Medium · CVSS 5.3CVE-2026-12517

Fediverse Embeds < 1.5.8 - Unauthenticated SSRF via Site Info EndpointCVE-2026-12517

Answer in brief

CVE-2026-12517 records a Medium severity (CVSS 5.3) vulnerability in Fediverse Embeds < 1.5.8 - Unauthenticated SSRF via Site Info Endpoint. The current sources do not mark it as known exploited. The current feed maps Unknown/Fediverse Embeds (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 9, 2026Updated Jul 9, 2026Source checked Nov 3, 2026First seen by HOL Jul 9, 2026Material review Jul 9, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Fediverse Embeds (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Unknown/Fediverse Embedsgeneric>=0 <1.5.81.5.8

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Unknown/Fediverse Embeds.
  2. 2Review the reported fix. Update Unknown/Fediverse Embeds to 1.5.8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jul 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Jul 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jul 9, 2026

Sources and claim methodology

  • Source referencewpscan.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • ArcReel Provider Test-Connection Endpoint test server-side request forgeryAlso CWE-918

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-918
Source
CVE List V5
Source checked
Nov 3, 2026
References
1 linked source
Open source record