CVE-2026-76801

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-09. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

The FireBox – WooCommerce Popup Builder, Exit Intent Popup, Email Optin & Cart Abandonment plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 3.1.10 via the value function. This is due to a trivially bypassable regex blacklist in Executer::allowedToRun() that fails to block WordPress core functions such as wp_insert_user, update_option, and file_put_contents, combined with no sanitization of PHP condition rule values stored via the firebox_meta REST endpoint. This makes it possible for authenticated attackers, with author-level access and above, to execute code on the server. On sites upgraded from a version prior to 3.1.10, the Migrator::preserveCampaignRoleAccess() function automatically grants the edit_fireboxes and publish_fireboxes capabilities to the Author role, lowering the effective entry point to Author-level access.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
59%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 9, 2026

References (6)

Vendor Advisories for CVE-2026-76801(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 28× in last 7d / 67× 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 08:12 UTCGHSA enrichment
  2. 2026-09-24 20:27 UTCEG score recompute
  3. 2026-09-24 20:27 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 08:42 UTCGHSA enrichment
  6. 2026-09-23 20:57 UTCEG score recompute
  7. 2026-09-23 20:57 UTCGHSA enrichment
  8. 2026-09-23 17:54 UTCEPSS rescore
  9. 2026-09-23 09:12 UTCGHSA enrichment
  10. 2026-09-22 21:27 UTCEG score recompute
  11. 2026-09-22 21:27 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 09:42 UTCGHSA enrichment
  14. 2026-09-21 21:58 UTCEG score recompute
  15. 2026-09-21 21:58 UTCGHSA enrichment
  16. 2026-09-21 21:09 UTCEPSS rescore
  17. 2026-09-21 10:12 UTCGHSA enrichment
  18. 2026-09-20 22:27 UTCEG score recompute
  19. 2026-09-20 22:27 UTCGHSA enrichment
  20. 2026-09-20 20:16 UTCEPSS rescore
  21. 2026-09-20 10:42 UTCGHSA enrichment
  22. 2026-09-19 22:57 UTCEG score recompute
  23. 2026-09-19 22:57 UTCGHSA enrichment
  24. 2026-09-19 11:11 UTCGHSA enrichment
  25. 2026-09-18 23:26 UTCEG score recompute
Show 42 more
  1. 2026-09-18 23:26 UTCGHSA enrichment
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 11:42 UTCGHSA enrichment
  4. 2026-09-17 23:57 UTCEG score recompute
  5. 2026-09-17 23:57 UTCGHSA enrichment
  6. 2026-09-17 12:12 UTCGHSA enrichment
  7. 2026-09-17 00:26 UTCEG score recompute
  8. 2026-09-17 00:26 UTCGHSA enrichment
  9. 2026-09-16 14:08 UTCEPSS rescore
  10. 2026-09-16 12:41 UTCEG score recompute
  11. 2026-09-16 12:40 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-16 00:56 UTCGHSA enrichment
  14. 2026-09-15 13:11 UTCEG score recompute
  15. 2026-09-15 13:11 UTCGHSA enrichment
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 01:25 UTCGHSA enrichment
  18. 2026-09-14 13:40 UTCGHSA enrichment
  19. 2026-09-14 01:45 UTCEG score recompute
  20. 2026-09-14 01:45 UTCGHSA enrichment
  21. 2026-09-13 13:58 UTCGHSA enrichment
  22. 2026-09-13 02:13 UTCEG score recompute
  23. 2026-09-13 02:13 UTCGHSA enrichment
  24. 2026-09-12 15:02 UTCEPSS rescore
  25. 2026-09-12 14:28 UTCGHSA enrichment
  26. 2026-09-12 02:43 UTCGHSA enrichment
  27. 2026-09-11 14:58 UTCEG score recompute
  28. 2026-09-11 14:58 UTCGHSA enrichment
  29. 2026-09-11 14:53 UTCEPSS rescore
  30. 2026-09-11 03:13 UTCGHSA enrichment
  31. 2026-09-10 15:28 UTCEG score recompute
  32. 2026-09-10 15:28 UTCGHSA enrichment
  33. 2026-09-10 09:35 UTCEPSS rescore
  34. 2026-09-10 03:37 UTCGHSA enrichment
  35. 2026-09-09 15:51 UTCGHSA enrichment
  36. 2026-09-09 14:28 UTCEG score recompute
  37. 2026-09-09 14:28 UTCGHSA enrichment
  38. 2026-09-09 14:08 UTCEG score recompute
  39. 2026-09-09 14:08 UTCGHSA enrichment
  40. 2026-09-09 03:19 UTCEG score recompute
  41. 2026-09-09 02:32 UTCEG score recompute
  42. 2026-09-09 02:31 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-76801?
CVE-2026-76801 is a high vulnerability published on September 9, 2026. The FireBox – WooCommerce Popup Builder, Exit Intent Popup, Email Optin & Cart Abandonment plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 3.1.10 via the value function. This is due to a trivially bypassable regex blacklist in…
When was CVE-2026-76801 disclosed?
CVE-2026-76801 was first published in the National Vulnerability Database on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76801 actively exploited?
CVE-2026-76801 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 40.8% of all scored CVEs.
What is the CVSS score of CVE-2026-76801?
CVE-2026-76801 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-76801?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-76801, 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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