CVE-2026-66397Public exploitNetwork attack vectorHinoki check available

Application takeover via traversal-based file deletion

Published Jul 27, 2026 · Updated Jul 27, 2026

Path traversal in phpMyFAQ before 4.1.6 allows remote authenticated users to delete arbitrary server files during category deletion. The category update controller preserves ../ sequences in existing_image, and Image::delete() concatenates the stored value with UPLOAD_DIR before calling unlink() without a containment check. An account with category edit and delete permissions can remove database.php, reopen the unauthenticated setup wizard, and create a superadmin account.

CVSS severity8.6
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Path traversal in phpMyFAQ before 4.1.6 allows remote authenticated users to delete arbitrary server files during category deletion. The category update controller preserves ../ sequences in existing_image, and Image::delete() concatenates the stored value with UPLOAD_DIR before calling unlink() without a containment check. An account with category edit and delete permissions can remove database.php, reopen the unauthenticated setup wizard, and create a superadmin account.

The record

CVE
CVE-2026-66397
Published
Jul 27, 2026
Updated
Jul 27, 2026
Vendor
Thorsten Rinne
Product
phpMyFAQ
Classifications
CWE-73, CWE-22, T1190, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <4.1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Thorsten Rinne · phpMyFAQversion=0 <4.1.6

Published CVSS scores

8.6thorsten/phpMyFAQCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-73External Control of File Name or Path
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application
T1485Data Destruction

Public exploit references

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

Technologies

Your stack

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Your stack

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