# CVE-2026-6735: PHP PHP-FPM cross-site scripting in status page

Source: https://junglewise.ai/threats/cve-2026-6735-php-php-fpm-cross-site-scripting-in-status-page  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-10. Updated: 2026-07-24  
License: CC BY 4.0 with a link back

CVE-2026-6735 · Severity: medium · CVSS 6.1 · Published 2026-05-10

PHP is a widely used programming language for web development, and PHP-FPM is a component used to manage web requests. A security flaw in the PHP-FPM status page allows an attacker to trick a user into clicking a malicious link that executes unauthorized code in their browser. This could lead to the theft of sensitive session cookies or information displayed on the status page.

Vendors: [PHP Group](https://junglewise.ai/threats/vendors/php-group).

## Quick answers

**Is CVE-2026-6735 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-6735 being exploited in the wild.

**How severe is CVE-2026-6735?** Medium severity, with a CVSS score of 6.1, published 10 May 2026.

**Which products and versions are affected?** PHP Group PHP-FPM 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, 8.5.* before 8.5.6.

**Is there a fix for CVE-2026-6735?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-6735 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-6735?** Check whether you run PHP Group PHP-FPM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A reflected cross-site scripting (XSS) vulnerability exists in the PHP-FPM status page due to improper sanitization of the request URI. An unauthenticated remote attacker can craft a malicious URL that, when visited by a victim, executes arbitrary JavaScript in the context of the victim's browser session. This occurs because the status page (in HTML or XML modes) fails to neutralize user-controllable input before rendering it. The vulnerability can be exploited to steal session cookies or sensitive data from the status report. Patches are available in PHP versions 8.2.31, 8.3.31, 8.4.21, and 8.5.6.

## Affected products

- PHP Group PHP-FPM (PHP) 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, 8.5.* before 8.5.6

## Timeline

- 2026-05-07: advisory: Initial advisory published by PHP Group on GitHub
- 2026-05-10: disclosed: CVE published to NVD

## References

- [https://github.com/php/php-src/security/advisories/GHSA-7qg2-v9fj-4mwv](https://github.com/php/php-src/security/advisories/GHSA-7qg2-v9fj-4mwv)