CVE-2026-85586

6.9 MEDIUM 0.5% exploit odds Fix listed Other Server

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-09-04 12:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-10 16:17 UTC Last updatedMost recent change to the record

Details

Published: 2026-09-04 12:17 UTC
Last modified: 2026-09-10 16:17 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Weakness: CWE-799
Record status: Deferred

Attack profile CVSS 4.0 · 6.9

Attack vector: Network
Complexity: Low
Attack requirements: None
Privileges needed: None
User interaction: None
Confidentiality: None
Integrity: Low
Availability: None

Raw vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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Fix and advisories

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

References

NVD record · CVE.org record