Critical USN-7502-1 1 CVE

php-horde-css-parser vulnerability

Published May 7, 2025 · Updated Jun 25, 2026

Ecosystem: Ubuntu

Summary

It was discovered that Horde Css Parser did not correctly handle
parsing uncontrolled CSS data. An attacker could possibly use
this issue to perform remote code execution. (CVE-2020-13756)

Fixed packages 2

Release	Package	Fixed in
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS	php-horde-css-parser	1.0.8-1ubuntu1+esm1
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS	php-horde-css-parser	1.0.11-1ubuntu1+esm1

Vulnerabilities 1

Critical 9.8

CVE-2020-13756 Public exploit EPSS 50%

Sabberworm PHP CSS Parser Code injection vulnerability in allSelectors()

Sabberworm PHP CSS Parser before 8.3.1 calls eval on uncontrolled data, possibly leading to remote code execution if the function allSelectors() or getSelectorsBySpecificity() is called with input from an attacker.

sabberworm/php-css-parser php-horde-css-parser php-horde-css-parser Debian Ubuntu Packagist

Jun 3, 2020

References

report
https://ubuntu.com/security/CVE-2020-13756