Improper control of interaction frequency in phpMyFAQ - CVE-2026-85586
Published: August 21, 2026 / Updated: September 14, 2026
Vulnerability identifier: #VU144530
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: CVE-2026-85586
CWE-ID: CWE-799
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to submit forged open questions and trigger notification emails.
The vulnerability exists due to improper control of interaction frequency in the open-question submission endpoint when processing requests with the store=now parameter. A remote attacker can send a specially crafted request to submit forged open questions and trigger notification emails.
Only instances with anonymous question submission enabled are vulnerable.
Affected software
phpMyFAQ
How to mitigate CVE-2026-85586
Install security update from vendor's website.
phpMyFAQ - update to 4.1.8