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CVE-2024-27300

phpMyFAQ Stored XSS at user email

5.5 MediumFix available

phpMyFAQ is an open source FAQ web application for PHP 8.1+ and MySQL, PostgreSQL and other databases. The email field in phpMyFAQ's user control panel page is vulnerable to stored XSS attacks due to the inadequacy of PHP's FILTER_VALIDATE_EMAIL function, which only validates the email format, not its content. This vulnerability enables an attacker to execute arbitrary client-side JavaScript within the context of another user's phpMyFAQ session. This vulnerability is fixed in 3.2.6.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
Low

Exploit likelihood

0.69%Up 0.6 points since Mar 26, 2024
90%50%10%1%

What each source reports

CVE List Score used 5.5

phpMyFAQ Stored XSS at user email

phpMyFAQ is an open source FAQ web application for PHP 8.1+ and MySQL, PostgreSQL and other databases. The email field in phpMyFAQ's user control panel page is vulnerable to stored XSS attacks due to the inadequacy of PHP's FILTER_VALIDATE_EMAIL function, which only validates the email format, not its content. This vulnerability enables an attacker to execute arbitrary client-side JavaScript within the context of another user's phpMyFAQ session. This vulnerability is fixed in 3.2.6.

Record
CVE-2024-27300
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2024-0986 5.5

phpMyFAQ is an open source FAQ web application for PHP 8.1+ and MySQL, PostgreSQL and other databases. The email field in phpMyFAQ's user control panel page is vulnerable to stored XSS attacks due to the inadequacy of PHP's FILTER_VALIDATE_EMAIL function, which only validates the email format, not its content. This vulnerability enables an attacker to execute arbitrary client-side JavaScript within the context of another user's phpMyFAQ session. This vulnerability is fixed in 3.2.6.

Record
EUVD-2024-0986
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
Updated
2026-11-03
GitHub AdvisoriesGHSA-q7g6-xfh2-vhpx 5.5

phpMyFAQ stored Cross-site Scripting at user email

Summary

The email field in phpMyFAQ's user control panel page is vulnerable to stored XSS attacks due to the inadequacy of PHP's FILTER_VALIDATE_EMAIL function, which only validates the email format, not its content. This vulnerability enables an attacker to execute arbitrary client-side JavaScript within the context of another user's phpMyFAQ session.

Details

Despite using PHP's FILTER_VALIDATE_EMAIL function, the email field does not adequately validate the content of the email address. This means that malicious input, such as JavaScript code, can be accepted and stored in the database without being detected. When the stored data is retrieved and displayed on web pages, it is not properly sanitized to remove or neutralize any potentially harmful content, such as JavaScript code which leads to Stored XSS.

PoC

  1. Login as any user, go to the user control panel, change email to any valid email and intercept the request.

  2. Modify the request’s email parameter to the following payload: "><svg/onload=confirm('XSS')>"@x.y

  3. Send the request and see that the XSS is triggered in the user control panel page.

  4. Also affects any user who browse to "../admin/?action=user&user_action=listallusers"

Impact

This allows an attacker to execute arbitrary client side JavaScript within the context of another user's phpMyFAQ session.

Record
GHSA-q7g6-xfh2-vhpx
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
Weakness
CWE-79
Updated
2026-11-02
NVD 5.5

phpMyFAQ is an open source FAQ web application for PHP 8.1+ and MySQL, PostgreSQL and other databases. The email field in phpMyFAQ's user control panel page is vulnerable to stored XSS attacks due to the inadequacy of PHP's FILTER_VALIDATE_EMAIL function, which only validates the email format, not its content. This vulnerability enables an attacker to execute arbitrary client-side JavaScript within the context of another user's phpMyFAQ session. This vulnerability is fixed in 3.2.6.

Record
CVE-2024-27300
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 5.5

phpMyFAQ Stored XSS at user email

phpMyFAQ is an open source FAQ web application for PHP 8.1+ and MySQL, PostgreSQL and other databases. The email field in phpMyFAQ's user control panel page is vulnerable to stored XSS attacks due to the inadequacy of PHP's FILTER_VALIDATE_EMAIL function, which only validates the email format, not its content. This vulnerability enables an attacker to execute arbitrary client-side JavaScript within the context of another user's phpMyFAQ session. This vulnerability is fixed in 3.2.6.

Record
CVE-2024-27300
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
Weakness
CWE-79
Updated
2026-11-02
OSVGHSA-q7g6-xfh2-vhpx 5.5

phpMyFAQ stored Cross-site Scripting at user email

Summary

The email field in phpMyFAQ's user control panel page is vulnerable to stored XSS attacks due to the inadequacy of PHP's FILTER_VALIDATE_EMAIL function, which only validates the email format, not its content. This vulnerability enables an attacker to execute arbitrary client-side JavaScript within the context of another user's phpMyFAQ session.

Details

Despite using PHP's FILTER_VALIDATE_EMAIL function, the email field does not adequately validate the content of the email address. This means that malicious input, such as JavaScript code, can be accepted and stored in the database without being detected. When the stored data is retrieved and displayed on web pages, it is not properly sanitized to remove or neutralize any potentially harmful content, such as JavaScript code which leads to Stored XSS.

PoC

  1. Login as any user, go to the user control panel, change email to any valid email and intercept the request.

  2. Modify the request’s email parameter to the following payload: "><svg/onload=confirm('XSS')>"@x.y

  3. Send the request and see that the XSS is triggered in the user control panel page.

  4. Also affects any user who browse to "../admin/?action=user&user_action=listallusers"

Impact

This allows an attacker to execute arbitrary client side JavaScript within the context of another user's phpMyFAQ session.

Record
GHSA-q7g6-xfh2-vhpx
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
Weakness
CWE-79
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
phpmyfaq/phpmyfaq
Packagist
 3.2.5 to 3.2.5
3.2.6
phpmyfaq/phpmyfaq
Packagist
 3.2.5 up to 3.2.6
3.2.6

History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-27300 is a medium vulnerability (CVSS 5.5) in Phpmyfaq, published March 25, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.69%, the 53rd percentile. Fixed in phpmyfaq/phpmyfaq 3.2.6.

References

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