CVE-2020-13756
unknown
CVSS v3
—
CVSS v4 NEW
—
VIR risk
—
Description
Sabberworm PHP CSS Parser Code injection vulnerability in allSelectors()
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Mixed 3 releases
| Version | Status | Fixed in |
|---|---|---|
| sid | Fixed | 1.0.11-8.1 |
| bullseye | Fixed | 1.0.11-8+deb11u1 |
| bookworm | Affected | — |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | sabberworm/php-css-parser | >=8.3.0,<8.3.1 | 8.3.1 |
| Packagist | sabberworm/php-css-parser | >=8.2.0,<8.2.1 | 8.2.1 |
| Packagist | sabberworm/php-css-parser | >=8.1.0,<8.1.1 | 8.1.1 |
| Packagist | sabberworm/php-css-parser | >=8.0.0,<8.0.1 | 8.0.1 |
| Packagist | sabberworm/php-css-parser | >=7.0.0,<7.0.4 | 7.0.4 |
| Packagist | sabberworm/php-css-parser | >=6.0.0,<6.0.2 | 6.0.2 |
| Packagist | sabberworm/php-css-parser | >=5.2.0,<5.2.1 | 5.2.1 |
| Packagist | sabberworm/php-css-parser | >=5.1.0,<5.1.3 | 5.1.3 |
| Packagist | sabberworm/php-css-parser | >=5.0.0,<5.0.9 | 5.0.9 |
| Packagist | sabberworm/php-css-parser | >=4.0.0,<4.0.1 | 4.0.1 |
| Packagist | sabberworm/php-css-parser | >=3.0.0,<3.0.1 | 3.0.1 |
| Packagist | sabberworm/php-css-parser | >=2.0.0,<2.0.1 | 2.0.1 |
| Packagist | sabberworm/php-css-parser | >=1.0.0,<1.0.1 | 1.0.1 |
References
- https://security-tracker.debian.org/tracker/CVE-2020-13756
- https://nvd.nist.gov/vuln/detail/CVE-2020-13756
- https://github.com/sabberworm/PHP-CSS-Parser/commit/2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4
- https://github.com/FriendsOfPHP/security-advisories/blob/master/sabberworm/php-css-parser/CVE-2020-13756.yaml
- https://github.com/sabberworm/PHP-CSS-Parser/releases/tag/8.3.1
- https://lists.debian.org/debian-lts-announce/2025/10/msg00013.html
- https://packetstormsecurity.com/files/cve/CVE-2020-13756
- http://packetstormsecurity.com/files/157923/Sabberworm-PHP-CSS-Code-Injection.html
- http://seclists.org/fulldisclosure/2020/Jun/7
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.