CVE-2026-84223

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreHIGH confidence

Score 6.8 from GitHub Security Advisory published 2026-09-20. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this week
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.8Exploit: None knownExposed: 0

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

The Kirki WordPress plugin before 6.3.1 does not sanitize uploaded SVG files while making them uploadable site-wide, allowing users with author-level access and above to upload a file containing JavaScript which is then served from the site's own origin and runs in the session of anyone who opens it.

CVSS v3
6.8
EG Score
6.8(high)
EG Risk
31(Track)
EG Risk 31/100SSVC: 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
Severity68% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

September 20, 2026

Last Modified

September 21, 2026

Advisory Details (1)

Auto-updated Sep 20, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Kirki 6.0.0 – 6.3.0 – Author+ Stored XSS via Unsanitized SVG Upload | CVE 2026-84223 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/02ed6d31-84f3-4723-8b49-ddb00c7db7d3/

Vendor Advisories for CVE-2026-84223(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 23× in last 7d / 23× 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. 2026-09-25 07:24 UTCEG score recompute
  2. 2026-09-25 07:24 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-24 08:59 UTCEG score recompute
  5. 2026-09-24 08:59 UTCGHSA enrichment
  6. 2026-09-23 17:54 UTCEPSS rescore
  7. 2026-09-23 10:34 UTCEG score recompute
  8. 2026-09-23 10:33 UTCGHSA enrichment
  9. 2026-09-22 16:01 UTCEPSS rescore
  10. 2026-09-22 12:06 UTCEG score recompute
  11. 2026-09-22 12:06 UTCGHSA enrichment
  12. 2026-09-21 21:09 UTCEPSS rescore
  13. 2026-09-21 13:41 UTCGHSA enrichment
  14. 2026-09-21 12:55 UTCEG score recompute
  15. 2026-09-21 12:55 UTCGHSA enrichment
  16. 2026-09-20 20:16 UTCEPSS rescore
  17. 2026-09-20 14:29 UTCGHSA enrichment
  18. 2026-09-20 13:56 UTCEG score recompute▲ 6.80
  19. 2026-09-20 13:56 UTCGHSA enrichment
  20. 2026-09-20 13:56 UTCMITRE cvelistV5CVSS v3 → 6.8 · severity → MEDIUM
  21. 2026-09-20 07:20 UTCNVD update
  22. 2026-09-20 06:25 UTCEG score recompute
  23. 2026-09-20 06:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-84223?
CVE-2026-84223 is a medium vulnerability published on September 20, 2026. The Kirki WordPress plugin before 6.3.1 does not sanitize uploaded SVG files while making them uploadable site-wide, allowing users with author-level access and above to upload a file containing JavaScript which is then served from the site's own origin and runs in the session of anyone who opens…
When was CVE-2026-84223 disclosed?
CVE-2026-84223 was first published in the National Vulnerability Database on September 20, 2026, with the most recent update on September 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84223 actively exploited?
CVE-2026-84223 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 65.4% of all scored CVEs.
What is the CVSS score of CVE-2026-84223?
CVE-2026-84223 has a CVSS v3.1 base score of 6.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-84223?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84223, 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

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