VulnerabilityModified
CVE-2020-13756
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.
CRITICAL 9.8EPSS 55.1%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 55.1%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 55.08% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-94
- Affected
- sabberworm/php css parser
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/157923/Sabberworm-PHP-CSS-Code-Injection.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Jun/7Exploit, Mailing List, Third Party Advisory
- https://github.com/sabberworm/PHP-CSS-Parser/commit/2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4Patch, Third Party Advisory
- https://github.com/sabberworm/PHP-CSS-Parser/releases/tag/8.3.1Release Notes, Third Party Advisory
- http://packetstormsecurity.com/files/157923/Sabberworm-PHP-CSS-Code-Injection.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Jun/7Exploit, Mailing List, Third Party Advisory
- https://github.com/sabberworm/PHP-CSS-Parser/commit/2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4Patch, Third Party Advisory
- https://github.com/sabberworm/PHP-CSS-Parser/releases/tag/8.3.1Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00013.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.