flaskBlog is a simple blog app built with Flask. Improper storage and rendering of the `/user/` page allows a user\'s comments to execute arbitrary javascript code. The html template `user.html` contains the following code snippet to render comments made by a user: `
{{comment[2]|safe}}
`. Use of the "safe" tag causes flask to _not_ escape the rendered content. To remediate this, simply remove the `|safe` tag from the HTML above. No fix is is available and users are advised to manually edit their installation.
Metrics
CVSS Version: 3.1 |
Base Score: 6.5 MEDIUM Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L