CVE-2026-13407

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-09-16. a secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The Royal Elementor Addons WordPress plugin before 1.7.1067 does not properly sanitize and escape values submitted through its form widget before including them in the body of administrator notification emails, allowing unauthenticated attackers to inject arbitrary HTML into emails sent to the site administrator on form submission.

CVSS v3
5.4
EG Score
5.4(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity54% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

September 16, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Sep 16, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Royal Elementor Addons < 1.7.1067 – Unauthenticated Stored HTML Injection in Form Notification Emails | CVE 2026-13407 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/b6bb29de-7d61-4a83-9ee1-0915ad2bda34/

Vendor Advisories for CVE-2026-13407(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 16× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 01:44 UTCEG score recompute
  2. 2026-09-19 01:43 UTCGHSA enrichment
  3. 2026-09-18 19:27 UTCEPSS rescore
  4. 2026-09-17 23:45 UTCEG score recompute
  5. 2026-09-17 23:45 UTCGHSA enrichment
  6. 2026-09-16 21:01 UTCGHSA enrichment
  7. 2026-09-16 18:25 UTCEG score recompute▼ 0.70
  8. 2026-09-16 18:25 UTCGHSA enrichment
  9. 2026-09-16 18:22 UTCNVD updateCVSS v3 → 5.4
  10. 2026-09-16 17:45 UTCEG score recompute▲ 0.70
  11. 2026-09-16 17:45 UTCGHSA enrichment
  12. 2026-09-16 17:44 UTCMITRE cvelistV5CVSS v3 → 6.1
  13. 2026-09-16 07:19 UTCEG score recompute▼ 0.70
  14. 2026-09-16 07:18 UTCNVD updateCVSS v3 → 5.4
  15. 2026-09-16 06:37 UTCEG score recompute
  16. 2026-09-16 06:37 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-13407?
CVE-2026-13407 is a medium vulnerability published on September 16, 2026. The Royal Elementor Addons WordPress plugin before 1.7.1067 does not properly sanitize and escape values submitted through its form widget before including them in the body of administrator notification emails, allowing unauthenticated attackers to inject arbitrary HTML into emails sent to the site…
When was CVE-2026-13407 disclosed?
CVE-2026-13407 was first published in the National Vulnerability Database on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13407 actively exploited?
CVE-2026-13407 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.6% of all scored CVEs.
What is the CVSS score of CVE-2026-13407?
CVE-2026-13407 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-13407?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13407, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-13407

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