CVE-2026-85591

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 78% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

phpMyFAQ versions before 4.1.8 contain an authentication bypass vulnerability in the user control panel API endpoint that allows authenticated attackers to change account passwords without verifying the current password. Attackers with session access can submit a PUT request to the user data update endpoint with only a CSRF token to silently change any user's password, including administrators, causing irreversible account takeover and victim lockout.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated Sep 4, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

phpMyFAQ before 4.1.8 Authentication Bypass via Unverified Password Change | Advisories | VulnCheck

https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.8-authentication-bypass-via-unverified-password-change
github Patch Available🟡 PoC Available

Unverified password change in user control panel API (no current-password verification) · Advisory · thorsten/phpMyFAQ · GitHub

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-6r2c-694w-24qv

Vendor Advisories for CVE-2026-85591(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 28× in last 7d / 62× 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. 2026-09-19 08:48 UTCGHSA enrichment
  2. 2026-09-18 21:49 UTCEG score recompute
  3. 2026-09-18 21:49 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 10:53 UTCGHSA enrichment
  6. 2026-09-17 23:57 UTCEG score recompute
  7. 2026-09-17 23:57 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 13:01 UTCGHSA enrichment
  10. 2026-09-17 01:35 UTCGHSA enrichment
  11. 2026-09-16 14:39 UTCEG score recompute
  12. 2026-09-16 14:39 UTCGHSA enrichment
  13. 2026-09-16 14:09 UTCEPSS rescore
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-16 03:43 UTCGHSA enrichment
  16. 2026-09-15 16:46 UTCGHSA enrichment
  17. 2026-09-15 05:50 UTCEG score recompute
  18. 2026-09-15 05:50 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 18:54 UTCGHSA enrichment
  22. 2026-09-14 07:56 UTCGHSA enrichment
  23. 2026-09-13 21:00 UTCEG score recompute
  24. 2026-09-13 21:00 UTCGHSA enrichment
  25. 2026-09-13 10:04 UTCGHSA enrichment
Show 37 more
  1. 2026-09-12 23:08 UTCEG score recompute
  2. 2026-09-12 23:08 UTCGHSA enrichment
  3. 2026-09-12 12:11 UTCGHSA enrichment
  4. 2026-09-12 01:15 UTCEG score recompute
  5. 2026-09-12 01:15 UTCGHSA enrichment
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 14:18 UTCEG score recompute
  9. 2026-09-11 14:18 UTCGHSA enrichment
  10. 2026-09-11 03:22 UTCGHSA enrichment
  11. 2026-09-10 16:26 UTCEG score recompute
  12. 2026-09-10 16:26 UTCGHSA enrichment
  13. 2026-09-10 15:28 UTCEG score recompute
  14. 2026-09-10 15:28 UTCGHSA enrichment
  15. 2026-09-10 05:07 UTCGHSA enrichment
  16. 2026-09-09 18:11 UTCGHSA enrichment
  17. 2026-09-09 07:14 UTCEG score recompute
  18. 2026-09-09 07:14 UTCGHSA enrichment
  19. 2026-09-08 22:01 UTCEPSS rescore
  20. 2026-09-08 20:18 UTCGHSA enrichment
  21. 2026-09-08 16:22 UTCGHSA enrichment
  22. 2026-09-08 04:07 UTCGHSA enrichment
  23. 2026-09-07 17:10 UTCEG score recompute
  24. 2026-09-07 17:10 UTCGHSA enrichment
  25. 2026-09-07 06:14 UTCGHSA enrichment
  26. 2026-09-06 19:15 UTCEG score recompute
  27. 2026-09-06 19:15 UTCGHSA enrichment
  28. 2026-09-06 13:48 UTCEPSS rescore
  29. 2026-09-06 08:18 UTCGHSA enrichment
  30. 2026-09-05 21:20 UTCEG score recompute
  31. 2026-09-05 21:20 UTCGHSA enrichment
  32. 2026-09-05 15:31 UTCEPSS rescore
  33. 2026-09-05 10:24 UTCGHSA enrichment
  34. 2026-09-04 23:25 UTCGHSA enrichment
  35. 2026-09-04 12:21 UTCEG score recompute
  36. 2026-09-04 11:34 UTCEG score recompute
  37. 2026-09-04 11:33 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-85591?
CVE-2026-85591 is a high vulnerability published on September 4, 2026. phpMyFAQ versions before 4.1.8 contain an authentication bypass vulnerability in the user control panel API endpoint that allows authenticated attackers to change account passwords without verifying the current password. Attackers with session access can submit a PUT request to the user data update…
When was CVE-2026-85591 disclosed?
CVE-2026-85591 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85591 actively exploited?
CVE-2026-85591 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 77.5% of all scored CVEs.
What is the CVSS score of CVE-2026-85591?
CVE-2026-85591 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-85591?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85591, 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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