CVE-2026-3851

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-09-02. 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: 0.3%CVSS: 6.4Exploit: None knownExposed services: Not assessed

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

The Divi theme for WordPress is vulnerable to Stored Cross-Site Scripting via the Dynamic Content feature's legacy JSON format in all versions up to, and including, 4.27.6. This is due to two compounding flaws: (1) the save-time sanitization filter et_builder_sanitize_dynamic_content_fields() only searches for dynamic content markers in the @ET-DC@...@ format, but the rendering engine also supports a legacy JSON format that is silently converted at render time, completely bypassing the save-time filter, and (2) the post_meta_key resolver in et_builder_filter_resolve_default_dynamic_content() does not apply wp_kses_post() to the resolved meta value when enable_html is set to on, passing raw get_post_meta() output directly to the page. This makes it possible for authenticated attackers, with Contributor-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
6.4MEDIUMmedium 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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
18th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

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 2, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Sep 2, 2026
No patch confirmed yet.
generic

Divi Version 4.27.7 Changelog | Divi Changelog

https://www.divichangelog.com/divi-update/divi-4/version-4-27-7

Vendor Advisories for CVE-2026-3851(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 / 80× 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 05:30 UTCEG score recompute
  2. 2026-10-05 05:30 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 05:43 UTCEG score recompute
  5. 2026-10-04 05:43 UTCGHSA enrichment
  6. 2026-10-03 14:25 UTCEPSS rescore
  7. 2026-10-03 05:57 UTCEG score recompute
  8. 2026-10-03 05:57 UTCGHSA enrichment
  9. 2026-10-02 06:04 UTCEG score recompute
  10. 2026-10-02 06:04 UTCGHSA enrichment
  11. 2026-10-01 19:50 UTCEPSS rescore
  12. 2026-10-01 05:14 UTCEG score recompute
  13. 2026-10-01 05:14 UTCGHSA enrichment
  14. 2026-09-30 15:03 UTCEPSS rescore
  15. 2026-09-30 04:59 UTCEG score recompute
  16. 2026-09-30 04:59 UTCGHSA enrichment
  17. 2026-09-29 05:12 UTCEG score recompute
  18. 2026-09-29 05:12 UTCGHSA enrichment
  19. 2026-09-28 05:25 UTCEG score recompute
  20. 2026-09-28 05:25 UTCGHSA enrichment
  21. 2026-09-27 13:48 UTCEPSS rescore
  22. 2026-09-27 05:39 UTCEG score recompute
  23. 2026-09-27 05:39 UTCGHSA enrichment
  24. 2026-09-26 15:58 UTCEPSS rescore
  25. 2026-09-26 05:04 UTCEG score recompute
Show 69 more
  1. 2026-09-26 05:03 UTCGHSA enrichment
  2. 2026-09-26 00:26 UTCEPSS rescore
  3. 2026-09-24 22:00 UTCEG score recompute
  4. 2026-09-24 22:00 UTCGHSA enrichment
  5. 2026-09-23 21:01 UTCEG score recompute
  6. 2026-09-23 21:01 UTCGHSA enrichment
  7. 2026-09-22 21:15 UTCEG score recompute
  8. 2026-09-22 21:15 UTCGHSA enrichment
  9. 2026-09-21 21:28 UTCEG score recompute
  10. 2026-09-21 21:28 UTCGHSA enrichment
  11. 2026-09-20 21:41 UTCEG score recompute
  12. 2026-09-20 21:41 UTCGHSA enrichment
  13. 2026-09-20 20:15 UTCEPSS rescore
  14. 2026-09-19 21:55 UTCEG score recompute
  15. 2026-09-19 21:55 UTCGHSA enrichment
  16. 2026-09-18 22:07 UTCEG score recompute
  17. 2026-09-18 22:07 UTCGHSA enrichment
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-18 19:28 UTCEPSS rescore
  20. 2026-09-17 22:20 UTCEG score recompute
  21. 2026-09-17 22:20 UTCGHSA enrichment
  22. 2026-09-17 19:30 UTCEPSS rescore
  23. 2026-09-16 22:33 UTCEG score recompute
  24. 2026-09-16 22:33 UTCGHSA enrichment
  25. 2026-09-16 14:08 UTCEPSS rescore
  26. 2026-09-16 05:15 UTCEPSS rescore
  27. 2026-09-15 22:25 UTCEG score recompute
  28. 2026-09-15 22:25 UTCGHSA enrichment
  29. 2026-09-15 03:11 UTCEPSS rescore
  30. 2026-09-14 22:37 UTCGHSA enrichment
  31. 2026-09-13 22:50 UTCEG score recompute
  32. 2026-09-13 22:50 UTCGHSA enrichment
  33. 2026-09-13 16:47 UTCEPSS rescore
  34. 2026-09-12 23:04 UTCEG score recompute
  35. 2026-09-12 23:04 UTCGHSA enrichment
  36. 2026-09-12 15:01 UTCEPSS rescore
  37. 2026-09-11 23:17 UTCEG score recompute
  38. 2026-09-11 23:17 UTCGHSA enrichment
  39. 2026-09-11 14:53 UTCEPSS rescore
  40. 2026-09-11 09:37 UTCEPSS rescore
  41. 2026-09-10 23:20 UTCEG score recompute
  42. 2026-09-10 23:20 UTCGHSA enrichment
  43. 2026-09-10 09:34 UTCEPSS rescore
  44. 2026-09-09 23:33 UTCGHSA enrichment
  45. 2026-09-08 23:16 UTCEG score recompute
  46. 2026-09-08 23:16 UTCGHSA enrichment
  47. 2026-09-08 22:00 UTCEPSS rescore
  48. 2026-09-07 18:27 UTCEG score recompute
  49. 2026-09-07 18:27 UTCGHSA enrichment
  50. 2026-09-07 16:01 UTCEPSS rescore
  51. 2026-09-06 18:41 UTCEG score recompute
  52. 2026-09-06 18:41 UTCGHSA enrichment
  53. 2026-09-06 13:47 UTCEPSS rescore
  54. 2026-09-05 18:54 UTCEG score recompute
  55. 2026-09-05 18:54 UTCGHSA enrichment
  56. 2026-09-04 19:08 UTCEG score recompute
  57. 2026-09-04 19:08 UTCGHSA enrichment
  58. 2026-09-04 05:06 UTCEPSS rescore
  59. 2026-09-03 19:21 UTCEG score recompute
  60. 2026-09-03 19:20 UTCGHSA enrichment
  61. 2026-09-03 18:37 UTCEG score recompute
  62. 2026-09-03 18:36 UTCGHSA enrichment
  63. 2026-09-03 14:01 UTCGHSA enrichment
  64. 2026-09-02 14:14 UTCEG score recompute
  65. 2026-09-02 14:14 UTCGHSA enrichment
  66. 2026-09-02 14:12 UTCEPSS rescore
  67. 2026-09-02 04:39 UTCEG score recompute
  68. 2026-09-02 03:47 UTCEG score recompute
  69. 2026-09-02 03:46 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-3851?
CVE-2026-3851 is a medium vulnerability published on September 2, 2026. The Divi theme for WordPress is vulnerable to Stored Cross-Site Scripting via the Dynamic Content feature's legacy JSON format in all versions up to, and including, 4.27.6. This is due to two compounding flaws: (1) the save-time sanitization filter etbuildersanitizedynamiccontentfields() only…
When was CVE-2026-3851 disclosed?
CVE-2026-3851 was first published 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-2026-3851 actively exploited?
CVE-2026-3851 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (18th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-3851?
CVE-2026-3851 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-2026-3851?
No fix for CVE-2026-3851 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-3851 are linked in the Vendor Advisories panel on this page.

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