CVE-2025-48883: Chrome PHP is missing encoding in `CssSelector`

Severity: medium (CVSS 5.3 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-05-30 · updated 2026-06-17
Weakness: CWE-79

Description

Chrome PHP allows users to start playing with chrome/chromium in headless mode from PHP. Prior to version 1.14.0, CSS Selector expressions are not properly encoded, which can lead to XSS (cross-site scripting) vulnerabilities. This is patched in v1.14.0. As a workaround, users can apply encoding manually to their selectors if they are unable to upgrade.

Affected products

chrome-php chrome: before 1.14.0

References

https://github.com/chrome-php/chrome/commit/34b2b8d1691f4e3940b1e1e95d388fffe81169c8
https://github.com/chrome-php/chrome/pull/691
https://github.com/chrome-php/chrome/security/advisories/GHSA-3432-fmrf-7vmh

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