CVE-2020-13756
CRITICAL9.8EPSS 27.8%Sabberworm PHP CSS Parser Code injection vulnerability in allSelectors()
Published: 3/26/2022Modified: 4/28/2026
Description
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.
Affected packages (3)
- Debian/php-horde-css-parserfrom 0, < 1.0.11-8+deb11u1
- Debian/php-horde-css-parserfrom 0, < 1.0.11-8+deb11u1
- Packagist/sabberworm/php-css-parser>= 8.3.0, < 8.3.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References (9)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-13756
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2020-13756
- WEBhttp://packetstormsecurity.com/files/157923/Sabberworm-PHP-CSS-Code-Injection.html
- WEBhttp://seclists.org/fulldisclosure/2020/Jun/7
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/sabberworm/php-css-parser/CVE-2020-13756.yaml
- WEBhttps://github.com/sabberworm/PHP-CSS-Parser/commit/2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4
- WEBhttps://github.com/sabberworm/PHP-CSS-Parser/releases/tag/8.3.1
- WEBhttps://lists.debian.org/debian-lts-announce/2025/10/msg00013.html
- WEBhttps://packetstormsecurity.com/files/cve/CVE-2020-13756