6.5

CVE-2026-24421: phpmyfaq Missing Authorization

CVSS: 6.5v3.1MediumAnalyzed
Published 24-01-2026Last modified 26-01-2026
Open JSON

Vulnerability summary

CVE-2026-24421 is a medium (CVSS 6.5) Missing Authorization vulnerability in phpmyfaq. EPSS estimates a 1.74% chance of exploitation in the next 30 days, higher than 77.5% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
1.74%
0%100%
Low · -0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2github, exploit-database

Timeline

  1. 24-01-2026
    PublishedVulnerability first disclosed.
  2. 26-01-2026
    Last modifiedVulnerability information updated.

Description

phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below have flawed authorization logic which exposes the /api/setup/backup endpoint to any authenticated user despite their permissions. SetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. Non-admin users can trigger a configuration backup and retrieve its path. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP. This issue is fixed in version 4.0.17.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

1.74%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

-0.03 pp

From 1.77% on 22-09-2026

22-09-202622-10-2026
EPSS score
1.74%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • githubUnverified

    Phpmyfaq

    Maturity: poc

  • exploit-databasephpUnverified

    phpMyFAQ 4.0.16 - Improper Authorization

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Phpmyfaq1 product
Thorsten1 product

2 vendors · 2 products

References

1 links