CVE-2026-5400

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreHIGH confidence

Score 6.4 from GitHub Security Advisory published 2026-09-19. A secondary CVSS source baseline 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The Redux Framework plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Media field filter values in versions up to, and including, 4.5.13 This is due to insufficient input sanitization of nested array values in the user_meta_save() function and unsafe output of filter CSS values in the render() function without proper escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS v3
6.4
EG Score
6.4MEDIUMhigh confidence
EG Risk
29
EG Risk 29/100CISA SSVC

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
Severity64% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 19, 2026

Last Modified

September 21, 2026

Advisory Details (1)

Auto-updated Sep 19, 2026
Patch available. Sources: github_pr.
github_pr Patch Available

Improve escaping and sanitization

Patch available: reduxframework/redux-framework 4.5.14 (PR #4112 merged 2026-09-09)

https://github.com/reduxframework/redux-framework/pull/4112/changes

Vendor Advisories for CVE-2026-5400(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 21× in last 7d / 51× 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. 2026-10-05 06:49 UTCEG score recompute
  2. 2026-10-05 06:49 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 08:54 UTCEG score recompute
  5. 2026-10-04 08:54 UTCGHSA enrichment
  6. 2026-10-03 14:26 UTCEPSS rescore
  7. 2026-10-03 10:58 UTCEG score recompute
  8. 2026-10-03 10:58 UTCGHSA enrichment
  9. 2026-10-02 17:56 UTCEPSS rescore
  10. 2026-10-02 13:02 UTCEG score recompute
  11. 2026-10-02 13:02 UTCGHSA enrichment
  12. 2026-10-01 19:50 UTCEPSS rescore
  13. 2026-10-01 15:06 UTCGHSA enrichment
  14. 2026-09-30 17:11 UTCEG score recompute
  15. 2026-09-30 17:11 UTCGHSA enrichment
  16. 2026-09-30 15:03 UTCEPSS rescore
  17. 2026-09-29 19:16 UTCEG score recompute
  18. 2026-09-29 19:15 UTCGHSA enrichment
  19. 2026-09-28 21:07 UTCEG score recompute
  20. 2026-09-28 21:07 UTCGHSA enrichment
  21. 2026-09-28 13:51 UTCEPSS rescore
  22. 2026-09-27 23:12 UTCEG score recompute
  23. 2026-09-27 23:12 UTCGHSA enrichment
  24. 2026-09-27 01:16 UTCEG score recompute
  25. 2026-09-27 01:16 UTCGHSA enrichment
Show 26 more
  1. 2026-09-26 15:59 UTCEPSS rescore
  2. 2026-09-26 03:19 UTCEG score recompute
  3. 2026-09-26 03:19 UTCGHSA enrichment
  4. 2026-09-25 05:24 UTCEG score recompute
  5. 2026-09-25 05:24 UTCGHSA enrichment
  6. 2026-09-24 14:04 UTCEPSS rescore
  7. 2026-09-24 07:29 UTCEG score recompute
  8. 2026-09-24 07:29 UTCGHSA enrichment
  9. 2026-09-23 17:54 UTCEPSS rescore
  10. 2026-09-23 09:33 UTCEG score recompute
  11. 2026-09-23 09:33 UTCGHSA enrichment
  12. 2026-09-22 11:38 UTCEG score recompute
  13. 2026-09-22 11:38 UTCGHSA enrichment
  14. 2026-09-21 13:42 UTCGHSA enrichment
  15. 2026-09-21 10:21 UTCEG score recompute
  16. 2026-09-21 10:21 UTCGHSA enrichment
  17. 2026-09-20 20:16 UTCEPSS rescore
  18. 2026-09-20 12:26 UTCEG score recompute
  19. 2026-09-20 12:25 UTCGHSA enrichment
  20. 2026-09-19 14:26 UTCEG score recompute
  21. 2026-09-19 14:26 UTCGHSA enrichment
  22. 2026-09-19 14:00 UTCEG score recompute
  23. 2026-09-19 14:00 UTCGHSA enrichment
  24. 2026-09-19 08:18 UTCEG score recompute
  25. 2026-09-19 07:51 UTCEG score recompute
  26. 2026-09-19 07:50 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-5400?
CVE-2026-5400 is a medium vulnerability published on September 19, 2026. The Redux Framework plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Media field filter values in versions up to, and including, 4.5.13 This is due to insufficient input sanitization of nested array values in the usermetasave() function and unsafe output of filter CSS…
When was CVE-2026-5400 disclosed?
CVE-2026-5400 was first published on September 19, 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-2026-5400 actively exploited?
CVE-2026-5400 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-5400?
CVE-2026-5400 has a CVSS base score of 6.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-5400?
A fix for CVE-2026-5400 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-5400 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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