CVE-2026-57996

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-15. 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 weekElevated
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: Elevated riskExposed: 0

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

phpMyFAQ before 4.1.5 contains a privilege escalation vulnerability in the user/add API endpoint that allows non-SuperAdmin administrators to create SuperAdmin accounts. A delegated administrator with USER_ADD/EDIT/DELETE permissions can call POST /admin/api/user/add with isSuperAdmin: true and attacker-chosen credentials to create a SuperAdmin account, then authenticate as that account to achieve full instance takeover.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

July 15, 2026

Last Modified

July 16, 2026

Advisory Details (2)

Auto-updated Jul 15, 2026
Patch available. Sources: github.
generic

phpMyFAQ - Privilege Escalation via Missing SuperAdmin Guard in user/add Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-superadmin-guard-in-user-add-endpoint
github Patch Available

Privilege escalation in admin API: user/add lets a non-SuperAdmin admin create a SuperAdmin (incomplete fix of the GHSA-xvp4 / GHSA-985r authorization-hardening series) · Advisory · thorsten/phpMyFAQ · GitHub

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9

Vendor Advisories for CVE-2026-57996(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 20× in last 7d / 105× 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 149 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-57996?
CVE-2026-57996 is a high vulnerability published on July 15, 2026. phpMyFAQ before 4.1.5 contains a privilege escalation vulnerability in the user/add API endpoint that allows non-SuperAdmin administrators to create SuperAdmin accounts. A delegated administrator with USER_ADD/EDIT/DELETE permissions can call POST /admin/api/user/add with isSuperAdmin: true and…
When was CVE-2026-57996 disclosed?
CVE-2026-57996 was first published in the National Vulnerability Database on July 15, 2026, with the most recent update on July 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57996 actively exploited?
CVE-2026-57996 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 63.2% of all scored CVEs.
What is the CVSS score of CVE-2026-57996?
CVE-2026-57996 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-57996?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57996, 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.

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