CVE-2026-78077

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 67% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:joomla, epss
Trending — 3 sources updated this week
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.6Exploit: None knownExposed: 0

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

Joomla Extension - joomshaper.com - Stored Cross-Site Scripting (XSS) in MegaMenu Layout Container & Embed Inputs in Helix Ultimate < 2.2.10 - Unsanitized column and item configuration values stored within the MegaMenu layout JSON were rendered without complete contextual escaping, allowing injection of malicious HTML/JS. Stricter sanitization and tag allowlists via InputFilter and htmlspecialchars were implemented.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity86% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

August 31, 2026

Last Modified

September 1, 2026

Advisory Details (1)

Auto-updated Aug 31, 2026
No patch confirmed yet.
generic

Helix Ultimate - Free Universal Joomla Template for any Website - JoomShaper

https://www.joomshaper.com/joomla-templates/helixultimate

Vendor Advisories for CVE-2026-78077(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 / 102× 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.

Showing the most recent 100 of 102 total refreshes for this CVE.

  1. 2026-09-25 11:27 UTCGHSA enrichment
  2. 2026-09-25 00:13 UTCEG score recompute
  3. 2026-09-25 00:13 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 13:02 UTCGHSA enrichment
  6. 2026-09-24 01:50 UTCEG score recompute
  7. 2026-09-24 01:50 UTCGHSA enrichment
  8. 2026-09-23 17:54 UTCEPSS rescore
  9. 2026-09-23 14:40 UTCGHSA enrichment
  10. 2026-09-23 03:29 UTCGHSA enrichment
  11. 2026-09-22 16:18 UTCEG score recompute
  12. 2026-09-22 16:18 UTCGHSA enrichment
  13. 2026-09-22 16:01 UTCEPSS rescore
  14. 2026-09-22 05:08 UTCEG score recompute
  15. 2026-09-22 05:08 UTCGHSA enrichment
  16. 2026-09-21 21:09 UTCEPSS rescore
  17. 2026-09-21 17:56 UTCGHSA enrichment
  18. 2026-09-21 06:45 UTCEG score recompute
  19. 2026-09-21 06:45 UTCGHSA enrichment
  20. 2026-09-20 20:16 UTCEPSS rescore
  21. 2026-09-20 19:34 UTCGHSA enrichment
  22. 2026-09-20 08:23 UTCGHSA enrichment
  23. 2026-09-19 21:12 UTCEG score recompute
  24. 2026-09-19 21:12 UTCGHSA enrichment
  25. 2026-09-19 10:00 UTCGHSA enrichment
Show 75 more
  1. 2026-09-18 22:21 UTCEG score recompute
  2. 2026-09-18 22:21 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 11:10 UTCGHSA enrichment
  5. 2026-09-17 23:59 UTCEG score recompute
  6. 2026-09-17 23:59 UTCGHSA enrichment
  7. 2026-09-17 12:28 UTCGHSA enrichment
  8. 2026-09-17 01:14 UTCEG score recompute
  9. 2026-09-17 01:14 UTCGHSA enrichment
  10. 2026-09-16 14:08 UTCEPSS rescore
  11. 2026-09-16 14:03 UTCEG score recompute
  12. 2026-09-16 14:03 UTCGHSA enrichment
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-16 02:01 UTCGHSA enrichment
  15. 2026-09-15 14:50 UTCGHSA enrichment
  16. 2026-09-15 03:39 UTCEG score recompute
  17. 2026-09-15 03:39 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 16:28 UTCGHSA enrichment
  21. 2026-09-14 05:14 UTCGHSA enrichment
  22. 2026-09-13 18:04 UTCEG score recompute
  23. 2026-09-13 18:04 UTCGHSA enrichment
  24. 2026-09-13 06:51 UTCGHSA enrichment
  25. 2026-09-12 19:36 UTCEG score recompute
  26. 2026-09-12 19:36 UTCGHSA enrichment
  27. 2026-09-12 08:25 UTCGHSA enrichment
  28. 2026-09-11 21:15 UTCEG score recompute
  29. 2026-09-11 21:15 UTCGHSA enrichment
  30. 2026-09-11 14:53 UTCEPSS rescore
  31. 2026-09-11 14:53 UTCEPSS rescore
  32. 2026-09-11 10:04 UTCEG score recompute
  33. 2026-09-11 10:03 UTCGHSA enrichment
  34. 2026-09-10 22:51 UTCGHSA enrichment
  35. 2026-09-10 11:40 UTCEG score recompute
  36. 2026-09-10 11:40 UTCGHSA enrichment
  37. 2026-09-10 09:35 UTCEPSS rescore
  38. 2026-09-09 23:44 UTCGHSA enrichment
  39. 2026-09-09 10:41 UTCGHSA enrichment
  40. 2026-09-08 23:30 UTCEG score recompute
  41. 2026-09-08 23:30 UTCGHSA enrichment
  42. 2026-09-08 22:01 UTCEPSS rescore
  43. 2026-09-08 02:54 UTCEG score recompute
  44. 2026-09-08 02:54 UTCGHSA enrichment
  45. 2026-09-07 15:42 UTCGHSA enrichment
  46. 2026-09-07 04:32 UTCGHSA enrichment
  47. 2026-09-06 17:21 UTCEG score recompute
  48. 2026-09-06 17:21 UTCGHSA enrichment
  49. 2026-09-06 13:48 UTCEPSS rescore
  50. 2026-09-06 06:09 UTCGHSA enrichment
  51. 2026-09-05 18:57 UTCEG score recompute
  52. 2026-09-05 18:57 UTCGHSA enrichment
  53. 2026-09-05 07:46 UTCGHSA enrichment
  54. 2026-09-04 20:35 UTCEG score recompute
  55. 2026-09-04 20:35 UTCGHSA enrichment
  56. 2026-09-04 09:22 UTCEG score recompute
  57. 2026-09-04 09:22 UTCGHSA enrichment
  58. 2026-09-04 05:07 UTCEPSS rescore
  59. 2026-09-03 22:10 UTCGHSA enrichment
  60. 2026-09-03 10:54 UTCGHSA enrichment
  61. 2026-09-02 23:43 UTCEG score recompute
  62. 2026-09-02 23:43 UTCGHSA enrichment
  63. 2026-09-02 14:12 UTCEPSS rescore
  64. 2026-09-02 12:33 UTCGHSA enrichment
  65. 2026-09-02 01:21 UTCGHSA enrichment
  66. 2026-09-01 14:06 UTCEG score recompute
  67. 2026-09-01 14:06 UTCGHSA enrichment
  68. 2026-09-01 13:54 UTCEPSS rescore
  69. 2026-09-01 13:53 UTCEG score recompute
  70. 2026-09-01 13:53 UTCGHSA enrichment
  71. 2026-09-01 06:52 UTCGHSA enrichment
  72. 2026-08-31 19:41 UTCGHSA enrichment
  73. 2026-08-31 15:22 UTCEG score recompute
  74. 2026-08-31 14:42 UTCEG score recompute
  75. 2026-08-31 14:25 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78077?
CVE-2026-78077 is a high vulnerability published on August 31, 2026. Joomla Extension - joomshaper.com - Stored Cross-Site Scripting (XSS) in MegaMenu Layout Container & Embed Inputs in Helix Ultimate < 2.2.10 - Unsanitized column and item configuration values stored within the MegaMenu layout JSON were rendered without complete contextual escaping, allowing…
When was CVE-2026-78077 disclosed?
CVE-2026-78077 was first published in the National Vulnerability Database on August 31, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78077 actively exploited?
CVE-2026-78077 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 66.7% of all scored CVEs.
What is the CVSS score of CVE-2026-78077?
CVE-2026-78077 has a CVSS v4.0 base score of 8.6 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-78077?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78077, 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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