CVE-2026-6735
Description
A flaw was found in PHP, specifically within the PHP-FPM status page. Due to improper sanitation of user data, a remote attacker can craft a malicious URL. When a user views the PHP-FPM status page with this crafted URL, it can lead to the execution of arbitrary JavaScript code (Cross-Site Scripting or XSS) on their machine, potentially compromising their browser session or leading to further attacks.
Mitigation
Restrict network access to the PHP-FPM status page to trusted internal networks or localhost. This can be achieved by configuring web server access controls (e.g., Apache httpd or Nginx) to deny external access to the status page URL. If the PHP-FPM status page functionality is not required, it should be disabled in the PHP-FPM configuration. Any changes to web server or PHP-FPM configuration may require a service reload or restart to take effect.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.4 | 6.1 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | None | None | N/A |
| User Interaction | Required | Required | N/A |
| Scope | Unchanged | Changed | N/A |
| Confidentiality | Low | Low | N/A |
| Integrity Impact | Low | Low | N/A |
| Availability Impact | None | None | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
