CVE-2020-13756
9.8
CRITICAL · CVSS 3.1 · EPSS 49.8% (pctl 99)
Patch early
EPSS 49.8% — above the 10% action threshold.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 49.8% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-94 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-06-03 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| sabberworm | php css parser |
References
- http://packetstormsecurity.com/files/157923/Sabberworm-PHP-CSS-Code-Injection.html
- http://seclists.org/fulldisclosure/2020/Jun/7
- https://github.com/sabberworm/PHP-CSS-Parser/commit/2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4
- https://github.com/sabberworm/PHP-CSS-Parser/releases/tag/8.3.1
- http://packetstormsecurity.com/files/157923/Sabberworm-PHP-CSS-Code-Injection.html
- http://seclists.org/fulldisclosure/2020/Jun/7
- https://github.com/sabberworm/PHP-CSS-Parser/commit/2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4
- https://github.com/sabberworm/PHP-CSS-Parser/releases/tag/8.3.1
- https://lists.debian.org/debian-lts-announce/2025/10/msg00013.html
→ the Explorer · watch your stack · NVD