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
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 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
16.6%
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 10× 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.

  1. 2026-07-23 03:20 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:25 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 14:31 UTCEPSS rescore
  7. 2026-07-19 02:29 UTCEPSS rescore
  8. 2026-07-18 10:04 UTCEPSS rescore
  9. 2026-07-16 20:20 UTCGHSA enrichment
  10. 2026-07-16 17:03 UTCEPSS rescore
  11. 2026-07-16 05:23 UTCGHSA enrichment
  12. 2026-07-15 16:57 UTCEPSS rescore
  13. 2026-07-15 16:57 UTCEPSS rescore
  14. 2026-07-15 16:16 UTCGHSA enrichment
  15. 2026-07-15 03:12 UTCGHSA enrichment
  16. 2026-07-15 02:00 UTCEPSS rescore
  17. 2026-07-15 02:00 UTCEPSS rescore
  18. 2026-07-14 14:03 UTCGHSA enrichment
  19. 2026-07-14 00:58 UTCGHSA enrichment
  20. 2026-07-13 22:31 UTCEPSS rescore
  21. 2026-07-13 11:55 UTCGHSA enrichment
  22. 2026-07-13 06:13 UTCEPSS rescore
  23. 2026-07-13 06:13 UTCEPSS rescore
  24. 2026-07-12 22:51 UTCGHSA enrichment
  25. 2026-07-12 09:47 UTCGHSA enrichment
Show 69 more
  1. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 20:42 UTCGHSA enrichment
  3. 2026-07-11 08:27 UTCEPSS rescore
  4. 2026-07-11 08:27 UTCEPSS rescore
  5. 2026-07-11 07:38 UTCGHSA enrichment
  6. 2026-07-10 18:30 UTCGHSA enrichment
  7. 2026-07-10 05:13 UTCGHSA enrichment
  8. 2026-07-09 19:10 UTCEPSS rescore
  9. 2026-07-09 19:10 UTCEPSS rescore
  10. 2026-07-09 16:07 UTCGHSA enrichment
  11. 2026-07-09 02:47 UTCGHSA enrichment
  12. 2026-07-08 15:16 UTCEPSS rescore
  13. 2026-07-08 15:16 UTCEPSS rescore
  14. 2026-07-08 13:44 UTCGHSA enrichment
  15. 2026-07-08 00:41 UTCGHSA enrichment
  16. 2026-07-07 13:46 UTCEPSS rescore
  17. 2026-07-07 13:46 UTCEPSS rescore
  18. 2026-07-07 11:37 UTCGHSA enrichment
  19. 2026-07-06 22:33 UTCGHSA enrichment
  20. 2026-07-06 16:27 UTCEPSS rescore
  21. 2026-07-06 16:27 UTCEPSS rescore
  22. 2026-07-06 09:29 UTCGHSA enrichment
  23. 2026-07-06 02:23 UTCEPSS rescore
  24. 2026-07-06 02:23 UTCEPSS rescore
  25. 2026-07-05 19:49 UTCGHSA enrichment
  26. 2026-07-05 06:45 UTCGHSA enrichment
  27. 2026-07-05 02:31 UTCEPSS rescore
  28. 2026-07-05 02:30 UTCEPSS rescore
  29. 2026-07-04 17:39 UTCGHSA enrichment
  30. 2026-07-04 06:31 UTCEPSS rescore
  31. 2026-07-04 06:31 UTCEPSS rescore
  32. 2026-07-04 04:33 UTCGHSA enrichment
  33. 2026-07-03 15:25 UTCGHSA enrichment
  34. 2026-07-03 02:21 UTCGHSA enrichment
  35. 2026-07-02 13:16 UTCGHSA enrichment
  36. 2026-07-02 00:12 UTCGHSA enrichment
  37. 2026-07-01 15:07 UTCEPSS rescore
  38. 2026-07-01 11:09 UTCGHSA enrichment
  39. 2026-06-30 23:22 UTCEPSS rescore
  40. 2026-06-30 22:05 UTCGHSA enrichment
  41. 2026-06-30 09:01 UTCGHSA enrichment
  42. 2026-06-29 19:58 UTCGHSA enrichment
  43. 2026-06-29 14:06 UTCEPSS rescore
  44. 2026-06-29 14:06 UTCEPSS rescore
  45. 2026-06-29 06:55 UTCGHSA enrichment
  46. 2026-06-28 17:51 UTCGHSA enrichment
  47. 2026-06-28 14:07 UTCEPSS rescore
  48. 2026-06-28 04:56 UTCEPSS rescore
  49. 2026-06-28 04:56 UTCEPSS rescore
  50. 2026-06-28 04:47 UTCGHSA enrichment
  51. 2026-06-27 15:43 UTCGHSA enrichment
  52. 2026-06-27 03:08 UTCEPSS rescore
  53. 2026-06-27 02:39 UTCGHSA enrichment
  54. 2026-06-26 13:35 UTCGHSA enrichment
  55. 2026-06-26 00:28 UTCGHSA enrichment
  56. 2026-06-25 13:49 UTCEPSS rescore
  57. 2026-06-25 11:24 UTCGHSA enrichment
  58. 2026-06-24 22:20 UTCGHSA enrichment
  59. 2026-06-24 14:05 UTCEPSS rescore
  60. 2026-06-24 09:16 UTCGHSA enrichment
  61. 2026-06-23 21:33 UTCEPSS rescore
  62. 2026-06-23 21:33 UTCEPSS rescore
  63. 2026-06-23 20:12 UTCGHSA enrichment
  64. 2026-06-23 07:04 UTCGHSA enrichment
  65. 2026-06-22 19:39 UTCNVD updateCVSS v4 → 8.7
  66. 2026-06-22 17:57 UTCGHSA enrichment
  67. 2026-06-22 04:43 UTCGHSA enrichment
  68. 2026-06-21 15:38 UTCEG score recompute
  69. 2026-06-21 15:38 UTCGHSA enrichment

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 16.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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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