CVE-2018-20583
MEDIUM6.1EPSS 0.31%PHP League CommonMark vulnerable to Cross-Site Scripting (XSS)
Published: 5/14/2022Modified: 2/16/2024
Also known as:GHSA-qx76-c53f-5c7q
Description
Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library versions 0.15.6 through 0.18.x before 0.18.1 allows remote attackers to insert unsafe URLs into HTML (even if allow_unsafe_links is false) via a newline character (e.g., writing javascript as javascri%0apt).
Affected packages (1)
- Packagist/league/commonmark>= 0.15.6, < 0.18.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2018-20583
- PATCHhttps://github.com/thephpleague/commonmark
- WEBhttps://commonmark.thephpleague.com/changelog
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/league/commonmark/CVE-2018-20583.yaml
- WEBhttps://github.com/thephpleague/commonmark/issues/337
- WEBhttps://github.com/thephpleague/commonmark/releases/tag/0.18.1