CVE-2026-34728Public exploitNetwork attack vector

Arbitrary file deletion via unsanitized media path

Published Apr 2, 2026 · Updated Apr 2, 2026

Path traversal in phpMyFAQ before 4.1.1 allows remote authenticated users to delete arbitrary server files through the media browser. MediaBrowserController::index() concatenates the user-controlled name with the upload directory and passes the unresolved path to unlink(), while its HTML-character filter leaves ../ sequences intact. Direct exploitation requires FAQ-edit permission; alternatively, remote attackers can induce an authenticated administrator to submit the CSRF request, causing file loss or an application outage.

CVSS severity8.7
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in phpMyFAQ before 4.1.1 allows remote authenticated users to delete arbitrary server files through the media browser. MediaBrowserController::index() concatenates the user-controlled name with the upload directory and passes the unresolved path to unlink(), while its HTML-character filter leaves ../ sequences intact. Direct exploitation requires FAQ-edit permission; alternatively, remote attackers can induce an authenticated administrator to submit the CSRF request, causing file loss or an application outage.

The record

CVE
CVE-2026-34728
Published
Apr 2, 2026
Updated
Apr 2, 2026
Vendor
Thorsten Rinne
Product
phpMyFAQ
Classifications
CWE-22, T1070.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 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=< 4.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Thorsten Rinne · phpMyFAQversion=< 4.1.1

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
8.7GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H

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 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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1070.004File Deletion

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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