CVE-2026-85588Public exploitNetwork attack vectorHinoki check available

Two-factor bypass via exported plaintext TOTP seed

Published Sep 4, 2026 · Updated Sep 4, 2026

Information disclosure in phpMyFAQ before 4.1.8 allows remote authenticated users to expose live TOTP seeds through user data exports. The exportUserData method writes the raw secret field from faquserdata into userdata.json inside the generated ZIP without redaction or an allowlist. Any party that later obtains the archive can generate valid one-time codes until two-factor authentication is reset for the affected account.

CVSS severity5.3
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in phpMyFAQ before 4.1.8 allows remote authenticated users to expose live TOTP seeds through user data exports. The exportUserData method writes the raw secret field from faquserdata into userdata.json inside the generated ZIP without redaction or an allowlist. Any party that later obtains the archive can generate valid one-time codes until two-factor authentication is reset for the affected account.

The record

CVE
CVE-2026-85588
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
Thorsten Rinne
Product
phpMyFAQ
Classifications
CWE-200, T1552.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.1.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Thorsten Rinne · phpMyFAQversion=0 <4.1.8

Published CVSS scores

5.3VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552.001Unsecured Credentials Credentials In Files

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo