GitHub Advisoryadvisory · Packagist
GHSA-62m3-fc7f-jpp8 Parsedown Class-Name Injection
HIGH
Official page ↗
- Aliases
- CVE-2019-10905
- Ecosystem
- Packagist
- Packages
- erusev/parsedown
- Severity
- High
- CVSS vector
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-79
- Reviewed
- 2022-03-26
Affected packages
• Packagist erusev/parsedown: < 1.7.2 → fixed in 1.7.2
Description
Parsedown before 1.7.2, when safe mode is used and HTML markup is disabled, might allow attackers to execute arbitrary JavaScript code if a script (already running on the affected page) executes the contents of any element with a specific class. This occurs because spaces are permitted in code block infostrings, which interferes with the intended behavior of a single class name beginning with the language- substring.
Related
Alias · CVE (1)
- CVE-2019-10905 Parsedown before 1.7.2, when safe mode is used and HTML markup is disabled, might allow attackers to execute arbitrary JavaScript code if a… vulnerability
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-10905 advisory
- https://github.com/erusev/parsedown/issues/699 web
- https://github.com/FriendsOfPHP/security-advisories/blob/master/erusev/parsedown/CVE-2019-10905.yaml web
- https://github.com/erusev/parsedown package
- https://github.com/erusev/parsedown/releases/tag/1.7.2 web