Detections
Analytics

CVE-2020-13756

critical

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.

References

https://github.com/sabberworm/PHP-CSS-Parser/releases/tag/8.3.1

https://github.com/sabberworm/PHP-CSS-Parser/commit/2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4

https://lists.debian.org/debian-lts-announce/2025/10/msg00013.html

http://seclists.org/fulldisclosure/2020/Jun/7

http://packetstormsecurity.com/files/157923/Sabberworm-PHP-CSS-Code-Injection.html

Details

Source: Mitre, NVD

Published: 2020-06-03

Updated: 2025-11-03

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.24657