CVE-2026-48904

HIGHPre-NVD 8.29.8▲
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-26. the CNA's CVSS baseline 8.2; sources differ by 1.6.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:joomla, epss, ghsa
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

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

An improper access check allows privelege escalation through the com_users group editing webservice endpoint.

CVSS v3
8.2
EG Score
9.8(medium)
EPSS
21.1%
KEV
Not listed

Published

May 26, 2026

Last Modified

May 27, 2026

Advisory Details (1)

Auto-updated May 26, 2026
No patch confirmed yet.
generic

[20260514] - Core - Privilege escalation through com_users webservice endpoints

https://developer.joomla.org/security-centre/1046-20260514-core-privilege-escalation-through-com-users-webservice-endpoints.html

Vendor Advisories for CVE-2026-48904(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 7× in last 7d / 95× 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 311 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-48904?
CVE-2026-48904 is a high vulnerability published on May 26, 2026. An improper access check allows privelege escalation through the com_users group editing webservice endpoint.
When was CVE-2026-48904 disclosed?
CVE-2026-48904 was first published in the National Vulnerability Database on May 26, 2026, with the most recent update on May 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48904 actively exploited?
CVE-2026-48904 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-48904?
CVE-2026-48904 has a CVSS v4.0 base score of 8.2 (CNA self-assessment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.
How do I remediate CVE-2026-48904?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48904, 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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