CVE-2026-46363 phpMyFAQ - Stored XSS in FAQ Question/Answer via Encode-Decode Bypass
Authenticated attackers can inject malicious scripts into FAQ content, leading to script execution in visitors' browsers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-46363?
CVE-2026-46363 is a medium-severity cross-site scripting vulnerability in thorsten phpmyfaq, published on 15 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
phpMyFAQ before 4.1.2 contains a stored cross-site scripting vulnerability in FAQ creation and update endpoints that bypass sanitization through encode-decode cycles. The vulnerability allows authenticated attackers with FAQ_ADD permission to inject malicious script tags via question or answer parameters, which execute in every visitor's browser when FAQ content is rendered with the raw Twig filter.
Weakness: CWE-79
Which versions are affected by CVE-2026-46363?
4 open source packages ship an affected version, including thorsten/phpmyfaq and phpmyfaq/phpmyfaq.
| Package | Affected | Fixed in |
|---|---|---|
thorsten/phpmyfaq Packagist | All versions | 4.1.2 |
thorsten/phpmyfaq Packagist | All versions | 4.1.2 |
phpmyfaq/phpmyfaq Packagist | All versions | 4.1.2 |
phpmyfaq/phpmyfaq Packagist | All versions | 4.1.2 |
How do I fix CVE-2026-46363?
Upgrade thorsten/phpmyfaq to 4.1.2 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-46363 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46363 exists.
Sources
Also known as GHSA-f5p7-2c9q-8896.