Critical severity9.8NVD Advisory· Published Jun 3, 2020· Updated Jun 17, 2026
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
3- Sabberworm/PHP CSS Parserdescription
Patches
Vulnerability mechanics
References
9- github.com/sabberworm/PHP-CSS-Parser/commit/2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4nvdPatchThird Party AdvisoryWEB
- packetstormsecurity.com/files/157923/Sabberworm-PHP-CSS-Code-Injection.htmlnvdExploitThird Party AdvisoryVDB EntryWEB
- seclists.org/fulldisclosure/2020/Jun/7nvdExploitMailing ListThird Party AdvisoryWEB
- github.com/advisories/GHSA-phrq-v4q2-hmq6ghsaADVISORY
- github.com/sabberworm/PHP-CSS-Parser/releases/tag/8.3.1nvdRelease NotesThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2020-13756ghsaADVISORY
- github.com/FriendsOfPHP/security-advisories/blob/master/sabberworm/php-css-parser/CVE-2020-13756.yamlghsaWEB
- lists.debian.org/debian-lts-announce/2025/10/msg00013.htmlnvdWEB
- packetstormsecurity.com/files/cve/CVE-2020-13756ghsaWEB
News mentions
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