CVE-2023-4007Public exploitNetwork attack vector

Stored script execution via unencoded FAQ links

Published Jul 31, 2023 · Updated Oct 11, 2024

Stored XSS in Thorsten Rinne phpMyFAQ before 3.1.16 allows remote authenticated users to execute script through malicious FAQ content. Link::toHtmlAnchor writes attacker-controlled tooltip, name, and link text into HTML attributes and content without HTML entity encoding. A low-privileged account can persist the payload, and execution occurs when another user views the affected FAQ link.

CVSS severity5.4
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Thorsten Rinne phpMyFAQ before 3.1.16 allows remote authenticated users to execute script through malicious FAQ content. Link::toHtmlAnchor writes attacker-controlled tooltip, name, and link text into HTML attributes and content without HTML entity encoding. A low-privileged account can persist the payload, and execution occurs when another user views the affected FAQ link.

The record

CVE
CVE-2023-4007
Published
Jul 31, 2023
Updated
Oct 11, 2024
Vendor
Thorsten Rinne
Product
phpMyFAQ
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 11, 2024Record 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 <3.1.16
  2. Affected versionversion=unspecified <3.1.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Thorsten Rinne · phpMyFAQversion=0 <3.1.16; version=unspecified <3.1.16

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
8.8huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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