CVE-2026-18843

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-09-05. A secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.1Exploit: 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 Beaver Builder Plugin (Starter Version) plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 'no_results_message' node_preview Parameter in all versions up to, and including, 2.11.0.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

CVSS v3
6.1
EG Score
6.1MEDIUMhigh confidence
EG Risk
28
EG Risk 28/100CISA 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
Severity61% × 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
0.2%
EPSS %ILE
5th
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 5, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Sep 5, 2026
No patch confirmed yet.
generic

WordPress Page Builder | Built for Builders | Beaver Builder

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Vendor Advisories for CVE-2026-18843(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 19× in last 7d / 81× 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. 2026-10-04 23:55 UTCEG score recompute
  2. 2026-10-04 23:55 UTCGHSA enrichment
  3. 2026-10-04 23:21 UTCEPSS rescore
  4. 2026-10-04 00:56 UTCEG score recompute
  5. 2026-10-04 00:56 UTCGHSA enrichment
  6. 2026-10-03 00:22 UTCEG score recompute
  7. 2026-10-03 00:22 UTCGHSA enrichment
  8. 2026-10-02 00:35 UTCEG score recompute
  9. 2026-10-02 00:35 UTCGHSA enrichment
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-10-01 01:36 UTCEG score recompute
  12. 2026-10-01 01:36 UTCGHSA enrichment
  13. 2026-09-30 15:02 UTCEPSS rescore
  14. 2026-09-30 02:38 UTCEG score recompute
  15. 2026-09-30 02:38 UTCGHSA enrichment
  16. 2026-09-29 15:20 UTCEPSS rescore
  17. 2026-09-28 23:02 UTCEG score recompute
  18. 2026-09-28 23:02 UTCGHSA enrichment
  19. 2026-09-28 13:51 UTCEPSS rescore
  20. 2026-09-27 23:46 UTCEG score recompute
  21. 2026-09-27 23:46 UTCGHSA enrichment
  22. 2026-09-27 13:47 UTCEPSS rescore
  23. 2026-09-27 00:42 UTCEG score recompute
  24. 2026-09-27 00:42 UTCGHSA enrichment
  25. 2026-09-26 15:58 UTCEPSS rescore
Show 59 more
  1. 2026-09-26 01:42 UTCEG score recompute
  2. 2026-09-26 01:42 UTCGHSA enrichment
  3. 2026-09-24 21:56 UTCEG score recompute
  4. 2026-09-24 21:56 UTCGHSA enrichment
  5. 2026-09-23 22:35 UTCEG score recompute
  6. 2026-09-23 22:35 UTCGHSA enrichment
  7. 2026-09-22 23:37 UTCEG score recompute
  8. 2026-09-22 23:37 UTCGHSA enrichment
  9. 2026-09-22 00:34 UTCEG score recompute
  10. 2026-09-22 00:34 UTCGHSA enrichment
  11. 2026-09-21 01:36 UTCEG score recompute
  12. 2026-09-21 01:36 UTCGHSA enrichment
  13. 2026-09-20 02:36 UTCEG score recompute
  14. 2026-09-20 02:36 UTCGHSA enrichment
  15. 2026-09-19 03:37 UTCEG score recompute
  16. 2026-09-19 03:37 UTCGHSA enrichment
  17. 2026-09-18 19:27 UTCEPSS rescore
  18. 2026-09-18 04:38 UTCEG score recompute
  19. 2026-09-18 04:38 UTCGHSA enrichment
  20. 2026-09-17 05:39 UTCEG score recompute
  21. 2026-09-17 05:39 UTCGHSA enrichment
  22. 2026-09-16 14:07 UTCEPSS rescore
  23. 2026-09-16 06:40 UTCEG score recompute
  24. 2026-09-16 06:39 UTCGHSA enrichment
  25. 2026-09-16 05:14 UTCEPSS rescore
  26. 2026-09-15 07:41 UTCEG score recompute
  27. 2026-09-15 07:40 UTCGHSA enrichment
  28. 2026-09-14 08:41 UTCEG score recompute
  29. 2026-09-14 08:41 UTCGHSA enrichment
  30. 2026-09-13 16:46 UTCEPSS rescore
  31. 2026-09-13 09:42 UTCEG score recompute
  32. 2026-09-13 09:42 UTCGHSA enrichment
  33. 2026-09-12 15:00 UTCEPSS rescore
  34. 2026-09-12 10:43 UTCGHSA enrichment
  35. 2026-09-11 11:44 UTCEG score recompute
  36. 2026-09-11 11:44 UTCGHSA enrichment
  37. 2026-09-11 09:36 UTCEPSS rescore
  38. 2026-09-10 12:19 UTCEG score recompute
  39. 2026-09-10 12:19 UTCGHSA enrichment
  40. 2026-09-10 09:34 UTCEPSS rescore
  41. 2026-09-09 13:20 UTCEG score recompute
  42. 2026-09-09 13:20 UTCGHSA enrichment
  43. 2026-09-08 22:00 UTCEPSS rescore
  44. 2026-09-08 14:16 UTCGHSA enrichment
  45. 2026-09-08 11:25 UTCEG score recompute
  46. 2026-09-08 11:24 UTCGHSA enrichment
  47. 2026-09-07 16:01 UTCEPSS rescore
  48. 2026-09-07 12:24 UTCEG score recompute
  49. 2026-09-07 12:24 UTCGHSA enrichment
  50. 2026-09-07 11:28 UTCEG score recompute
  51. 2026-09-07 11:28 UTCGHSA enrichment
  52. 2026-09-07 05:25 UTCEG score recompute
  53. 2026-09-07 05:25 UTCGHSA enrichment
  54. 2026-09-06 13:47 UTCEPSS rescore
  55. 2026-09-06 06:24 UTCEG score recompute
  56. 2026-09-06 06:24 UTCGHSA enrichment
  57. 2026-09-05 07:24 UTCEG score recompute
  58. 2026-09-05 06:49 UTCEG score recompute
  59. 2026-09-05 06:48 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18843?
CVE-2026-18843 is a medium vulnerability published on September 5, 2026. The Beaver Builder Plugin (Starter Version) plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 'noresultsmessage' node_preview Parameter in all versions up to, and including, 2.11.0.1 due to insufficient input sanitization and output escaping. This makes it possible for…
When was CVE-2026-18843 disclosed?
CVE-2026-18843 was first published on September 5, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18843 actively exploited?
CVE-2026-18843 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18843?
CVE-2026-18843 has a CVSS base score of 6.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18843?
No fix for CVE-2026-18843 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-2026-18843 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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