thephpleague/commonmark · Security
PHP League CommonMark vulnerable to Cross-Site Scripting (XSS)
- GHSA ID
- GHSA-qx76-c53f-5c7q
- CVE ID
- CVE-2018-20583
- Severity
- medium
- Published
- Updated
- CVSS
- 6.1 · CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CVSS v3
- 6.1 · CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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).
CWEs
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-20583 ↗
- https://github.com/thephpleague/commonmark/issues/337 ↗
- https://commonmark.thephpleague.com/changelog/ ↗
- https://github.com/thephpleague/commonmark/releases/tag/0.18.1 ↗
- https://github.com/FriendsOfPHP/security-advisories/blob/master/league/commonmark/CVE-2018-20583.yaml ↗
- https://github.com/advisories/GHSA-qx76-c53f-5c7q ↗