CVE-2026-65885

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-29. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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: 0%CVSS: 8.8Exploit: None knownExposed: 0

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

Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2 - File upload methods allows authenticated attackers to upload arbitrary files. Turns into an authenticated RCE if combined with CVE-2026-65884 as the required account can be created by the attacker.

CVSS v3
8.8
EG Score
8.8(medium)
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%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

July 29, 2026

Last Modified

August 12, 2026

Advisory Details (2)

Auto-updated Jul 31, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

Build a Joomla Site — Joomla Website Builder Gridbox

https://www.balbooa.com/gridbox
generic🔴 Active Exploitation

Gridbox: 23 More Critical Vulnerabilities | mySites.guru

https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/

Vendor Advisories for CVE-2026-65885(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 / 88× 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 198 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-65885?
CVE-2026-65885 is a high vulnerability published on July 29, 2026. Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2 - File upload methods allows authenticated attackers to upload arbitrary files. Turns into an authenticated RCE if combined with CVE-2026-65884 as the required account can be created by the attacker.
When was CVE-2026-65885 disclosed?
CVE-2026-65885 was first published in the National Vulnerability Database on July 29, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65885 actively exploited?
CVE-2026-65885 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 78.3% of all scored CVEs.
What is the CVSS score of CVE-2026-65885?
CVE-2026-65885 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-65885?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65885, 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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