CVE-2026-85586

MEDIUMPre-NVD 6.96.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 70% 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
6.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.9Exploit: 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 fail to validate CAPTCHA when the store parameter is set to 'now' in question submission requests. Unauthenticated attackers can bypass CAPTCHA protection and submit unlimited questions directly, causing database pollution and triggering outgoing mail notifications.

CVSS v3
6.9
EG Score
6.9(medium)
EG Risk
46(Track)
EG Risk 46/100SSVC: 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
Severity69% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
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 CAPTCHA Bypass via store parameter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.8-captcha-bypass-via-store-parameter
github Patch Available🟡 PoC Available

CAPTCHA bypass on anonymous question submission via store=now parameter · Advisory · thorsten/phpMyFAQ · GitHub

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-72vj-pvm4-mm7x

Vendor Advisories for CVE-2026-85586(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 21× in last 7d / 45× 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. 2026-09-18 19:56 UTCEG score recompute
  2. 2026-09-18 19:56 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-17 22:13 UTCEG score recompute
  5. 2026-09-17 22:13 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 00:30 UTCEG score recompute
  8. 2026-09-17 00:30 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-16 02:47 UTCGHSA enrichment
  12. 2026-09-15 05:04 UTCEG score recompute
  13. 2026-09-15 05:04 UTCGHSA enrichment
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-14 07:17 UTCEG score recompute
  17. 2026-09-14 07:17 UTCGHSA enrichment
  18. 2026-09-13 09:35 UTCEG score recompute
  19. 2026-09-13 09:35 UTCGHSA enrichment
  20. 2026-09-12 11:52 UTCEG score recompute
  21. 2026-09-12 11:52 UTCGHSA enrichment
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-11 14:09 UTCEG score recompute
  25. 2026-09-11 14:09 UTCGHSA enrichment
Show 20 more
  1. 2026-09-10 16:26 UTCEG score recompute
  2. 2026-09-10 16:26 UTCGHSA enrichment
  3. 2026-09-10 15:28 UTCEG score recompute
  4. 2026-09-10 15:28 UTCGHSA enrichment
  5. 2026-09-09 18:01 UTCEG score recompute
  6. 2026-09-09 18:01 UTCGHSA enrichment
  7. 2026-09-08 22:01 UTCEPSS rescore
  8. 2026-09-08 20:18 UTCGHSA enrichment
  9. 2026-09-08 03:16 UTCEG score recompute
  10. 2026-09-08 03:16 UTCGHSA enrichment
  11. 2026-09-07 05:33 UTCEG score recompute
  12. 2026-09-07 05:33 UTCGHSA enrichment
  13. 2026-09-06 13:48 UTCEPSS rescore
  14. 2026-09-06 07:50 UTCEG score recompute
  15. 2026-09-06 07:50 UTCGHSA enrichment
  16. 2026-09-05 15:31 UTCEPSS rescore
  17. 2026-09-05 10:07 UTCGHSA enrichment
  18. 2026-09-04 12:22 UTCEG score recompute
  19. 2026-09-04 11:34 UTCEG score recompute
  20. 2026-09-04 11:33 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-85586?
CVE-2026-85586 is a medium vulnerability published on September 4, 2026. phpMyFAQ versions before 4.1.8 fail to validate CAPTCHA when the store parameter is set to 'now' in question submission requests. Unauthenticated attackers can bypass CAPTCHA protection and submit unlimited questions directly, causing database pollution and triggering outgoing mail notifications.
When was CVE-2026-85586 disclosed?
CVE-2026-85586 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-2026-85586 actively exploited?
CVE-2026-85586 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 70.3% of all scored CVEs.
What is the CVSS score of CVE-2026-85586?
CVE-2026-85586 has a CVSS v3 base score of 6.9 (NVD).
How do I remediate CVE-2026-85586?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85586, 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

Explore the affected products and dependency analysis for CVE-2026-85586

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