Critical severityNVD Advisory· Published Jun 3, 2020· Updated Nov 3, 2025
CVE-2020-13756
CVE-2020-13756
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
sabberworm/php-css-parserPackagist | >= 8.3.0, < 8.3.1 | 8.3.1 |
sabberworm/php-css-parserPackagist | >= 8.2.0, < 8.2.1 | 8.2.1 |
sabberworm/php-css-parserPackagist | >= 8.1.0, < 8.1.1 | 8.1.1 |
sabberworm/php-css-parserPackagist | >= 8.0.0, < 8.0.1 | 8.0.1 |
sabberworm/php-css-parserPackagist | >= 7.0.0, < 7.0.4 | 7.0.4 |
sabberworm/php-css-parserPackagist | >= 6.0.0, < 6.0.2 | 6.0.2 |
sabberworm/php-css-parserPackagist | >= 5.2.0, < 5.2.1 | 5.2.1 |
sabberworm/php-css-parserPackagist | >= 5.1.0, < 5.1.3 | 5.1.3 |
sabberworm/php-css-parserPackagist | >= 5.0.0, < 5.0.9 | 5.0.9 |
sabberworm/php-css-parserPackagist | >= 4.0.0, < 4.0.1 | 4.0.1 |
sabberworm/php-css-parserPackagist | >= 3.0.0, < 3.0.1 | 3.0.1 |
sabberworm/php-css-parserPackagist | >= 2.0.0, < 2.0.1 | 2.0.1 |
sabberworm/php-css-parserPackagist | >= 1.0.0, < 1.0.1 | 1.0.1 |
Affected products
2- Sabberworm/PHP CSS Parserdescription
Patches
Vulnerability mechanics
Generated on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
9- github.com/advisories/GHSA-phrq-v4q2-hmq6ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2020-13756ghsaADVISORY
- packetstormsecurity.com/files/157923/Sabberworm-PHP-CSS-Code-Injection.htmlghsax_refsource_MISCWEB
- seclists.org/fulldisclosure/2020/Jun/7ghsax_refsource_MISCWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/sabberworm/php-css-parser/CVE-2020-13756.yamlghsaWEB
- github.com/sabberworm/PHP-CSS-Parser/commit/2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4ghsax_refsource_MISCWEB
- github.com/sabberworm/PHP-CSS-Parser/releases/tag/8.3.1ghsax_refsource_MISCWEB
- lists.debian.org/debian-lts-announce/2025/10/msg00013.htmlghsaWEB
- packetstormsecurity.com/files/cve/CVE-2020-13756ghsaWEB
News mentions
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