CVE-2026-56396

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-21. 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 4.1.4 contains missing authorization vulnerabilities in editUser() and updateUserRights() endpoints that allow authenticated administrators to escalate privileges. Non-SuperAdmin users with edit_user permission can set is_superadmin flag or grant arbitrary rights to escalate to SuperAdmin access.

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

June 21, 2026

Last Modified

June 23, 2026

Advisory Details (2)

Auto-updated Jun 22, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

phpMyFAQ - Privilege Escalation via Missing Authorization in editUser() and updateUserRights() | Advisories | VulnCheck

https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-authorization-in-edituser-and-updateuserrights
github Patch Available🟡 PoC Available

phpMyFAQ 4.1.3: incomplete fix for GHSA-xvp4-phqj-cjr3 — editUser() and updateUserRights() lack authorization guards · Advisory · thorsten/phpMyFAQ · GitHub

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-985r-q3qp-299h

Vendor Advisories for CVE-2026-56396(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
Packagist(2)
PackageVulnerable rangeFixed inDependents
phpmyfaq/phpmyfaq2.10.0-alpha ... 4.1.3 (172 versions)4.1.4—
thorsten/phpmyfaq2.10.0-alpha ... 4.1.3 (172 versions)4.1.4—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 101× 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 202 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56396?
CVE-2026-56396 is a high vulnerability published on June 21, 2026. phpMyFAQ before 4.1.4 contains missing authorization vulnerabilities in editUser() and updateUserRights() endpoints that allow authenticated administrators to escalate privileges. Non-SuperAdmin users with edituser permission can set issuperadmin flag or grant arbitrary rights to escalate to…
When was CVE-2026-56396 disclosed?
CVE-2026-56396 was first published in the National Vulnerability Database on June 21, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56396 actively exploited?
CVE-2026-56396 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 63.3% of all scored CVEs.
What is the CVSS score of CVE-2026-56396?
CVE-2026-56396 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-56396?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56396, 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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