Security: Cross-Site Scripting (XSS) via innerHTML in IFrame#500
Open
tomaioo wants to merge 2 commits into
Open
Security: Cross-Site Scripting (XSS) via innerHTML in IFrame#500tomaioo wants to merge 2 commits into
tomaioo wants to merge 2 commits into
Conversation
The `media_id` variable, derived from `this.data.url`, is directly assigned to `innerHTML` without sanitization. An attacker can supply a malicious URL in the storymap configuration JSON to inject arbitrary HTML and JavaScript, resulting in DOM-based XSS. Signed-off-by: tomaioo <203048277+tomaioo@users.noreply.github.com>
The `media_id` variable, derived from `this.data.url`, is directly assigned to `innerHTML` without sanitization. An attacker can supply a malicious URL in the storymap configuration JSON to inject arbitrary HTML and JavaScript, resulting in DOM-based XSS. Signed-off-by: tomaioo <203048277+tomaioo@users.noreply.github.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
Security: Cross-Site Scripting (XSS) via innerHTML in IFrame
Problem
Severity:
High| File:src/js/media/types/IFrame.js:L24The
media_idvariable, derived fromthis.data.url, is directly assigned toinnerHTMLwithout sanitization. An attacker can supply a malicious URL in the storymap configuration JSON to inject arbitrary HTML and JavaScript, resulting in DOM-based XSS.Solution
Do not use
innerHTMLwith untrusted input. If an iframe is required, construct it usingdocument.createElement('iframe')and set itssrcproperty directly, ensuring the URL uses an expected protocol (e.g., HTTPS).Changes
src/js/media/types/IFrame.js(modified)src/js/media/types/Blockquote.js(modified)