CVE-2026-79621

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-09-02. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

The CatalogX WordPress plugin before 6.1.3 does not sanitise or escape content that an unauthenticated user can store before including it in the product enquiry notification email sent to the site administrator, allowing unauthenticated attackers to inject arbitrary content into that email, which is delivered when an unrelated visitor later submits a product enquiry.

CVSS v3
4.3
EG Score
4.3(high)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Sep 2, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

CatalogX < 6.1.3 – Unauthenticated Email Content Injection via Shared Transient | CVE 2026-79621 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/9a4c12ff-80d8-400c-abfa-de557ead3b07/

Vendor Advisories for CVE-2026-79621(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 18× in last 7d / 47× 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 08:54 UTCEG score recompute
  2. 2026-09-19 08:54 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 07:56 UTCEG score recompute
  5. 2026-09-18 07:56 UTCGHSA enrichment
  6. 2026-09-17 06:59 UTCEG score recompute
  7. 2026-09-17 06:59 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 06:02 UTCEG score recompute
  10. 2026-09-16 06:02 UTCGHSA enrichment
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 05:05 UTCEG score recompute
  13. 2026-09-15 05:04 UTCGHSA enrichment
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-14 04:01 UTCEG score recompute
  17. 2026-09-14 04:01 UTCGHSA enrichment
  18. 2026-09-13 03:04 UTCGHSA enrichment
  19. 2026-09-12 02:07 UTCEG score recompute
  20. 2026-09-12 02:07 UTCGHSA enrichment
  21. 2026-09-11 14:53 UTCEPSS rescore
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 01:10 UTCEG score recompute
  24. 2026-09-11 01:10 UTCGHSA enrichment
  25. 2026-09-10 00:13 UTCGHSA enrichment
Show 22 more
  1. 2026-09-08 23:15 UTCEG score recompute
  2. 2026-09-08 23:15 UTCGHSA enrichment
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-07 21:54 UTCGHSA enrichment
  5. 2026-09-06 20:57 UTCEG score recompute
  6. 2026-09-06 20:57 UTCGHSA enrichment
  7. 2026-09-06 13:48 UTCEPSS rescore
  8. 2026-09-05 20:00 UTCEG score recompute
  9. 2026-09-05 20:00 UTCGHSA enrichment
  10. 2026-09-04 19:02 UTCEG score recompute
  11. 2026-09-04 19:02 UTCGHSA enrichment
  12. 2026-09-04 05:07 UTCEPSS rescore
  13. 2026-09-03 18:04 UTCGHSA enrichment
  14. 2026-09-03 12:24 UTCEG score recompute
  15. 2026-09-03 12:24 UTCGHSA enrichment
  16. 2026-09-02 14:12 UTCEPSS rescore
  17. 2026-09-02 11:23 UTCEG score recompute▲ 4.30
  18. 2026-09-02 11:23 UTCGHSA enrichment
  19. 2026-09-02 11:21 UTCNVD updateCVSS v3 → 4.3 · severity → MEDIUM
  20. 2026-09-02 06:26 UTCNVD update
  21. 2026-09-02 06:07 UTCEG score recompute
  22. 2026-09-02 06:05 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-79621?
CVE-2026-79621 is a medium vulnerability published on September 2, 2026. The CatalogX WordPress plugin before 6.1.3 does not sanitise or escape content that an unauthenticated user can store before including it in the product enquiry notification email sent to the site administrator, allowing unauthenticated attackers to inject arbitrary content into that email, which…
When was CVE-2026-79621 disclosed?
CVE-2026-79621 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-79621 actively exploited?
CVE-2026-79621 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 99.0% of all scored CVEs.
What is the CVSS score of CVE-2026-79621?
CVE-2026-79621 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-79621?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-79621, 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-2026-79621

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