CVEvulnerability
CVE-2019-10905
8.1 HIGH
Official page ↗
- Status
- Modified
- Published
- 2019-04-06
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 8.1 HIGH — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-79
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.
Affected configurations
• parsedown parsedown (< 1.7.2)
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://github.com/erusev/parsedown/issues/699 Exploit, Issue Tracking, Third Party Advisory
- https://github.com/erusev/parsedown/releases/tag/1.7.2 Release Notes, Third Party Advisory
- https://github.com/erusev/parsedown/issues/699 Exploit, Issue Tracking, Third Party Advisory
- https://github.com/erusev/parsedown/releases/tag/1.7.2 Release Notes, Third Party Advisory