#xss

### Summary A stored XSS vulnerability in Excalidraw's web embeddable component. This allows arbitrary JavaScript to be run in the context of the domain where the editor is hosted. ### Poc Inserting an embed with the below url (can be copy/pasted onto canvas to insert as embed) will log `42` to the console: ``` https://gist.github.com/vv=v<script>console.log(42)</script> ``` ### Details There were two vectors. One rendering untrusted string as iframe's `srcdoc` without properly sanitizing against HTML injection. Second by improperly sanitizing against attribute HTML injection. This in conjunction with allowing `allow-same-origin` sandbox flag (necessary for several embeds) resulted in the XSS. Former was fixed by no longer rendering unsafe `srcdoc` content verbatim, and instead strictly parsing the supplied content and constructing the `srcdoc` manually. The latter by sanitizing properly. The `allow-same-origin` flag is now also set only in cases that require it, following the...

Keycloak allows arbitrary URLs as SAML Assertion Consumer Service POST Binding URL (ACS), including JavaScript URIs (javascript:). Allowing JavaScript URIs in combination with HTML forms leads to JavaScript evaluation in the context of the embedding origin on form submission. #### Acknowledgements: Special thanks to Lauritz Holtmann for reporting this issue and helping us improve our project.

Red Hat Security Advisory 2024-1868-03 - An update is now available for Red Hat build of Keycloak. Issues addressed include bypass, cross site scripting, and denial of service vulnerabilities.

### Summary There is a potential cross-site scripting (XSS) vulnerability that can be exploited via maliciously crafted user data. Our filter to detect and prevent the use of the `javascript:` URL scheme in the `href` attribute of an `<a>` tag could be bypassed with tab `\t` or newline `\n` characters between the characters of the protocol, e.g. `java\tscript:`. ### Impact If you render an `<a>` tag with an `href` attribute set to a user-provided link, that link could potentially execute JavaScript when clicked by another user. ```ruby a(href: user_profile) { "Profile" } ``` ### Mitigation The best way to mitigate this vulnerability is to update to one of the following versions: - [1.10.1](https://rubygems.org/gems/phlex/versions/1.10.1) - [1.9.2](https://rubygems.org/gems/phlex/versions/1.9.2) - [1.8.3](https://rubygems.org/gems/phlex/versions/1.8.3) - [1.7.2](https://rubygems.org/gems/phlex/versions/1.7.2) - [1.6.3](https://rubygems.org/gems/phlex/versions/1.6.3) - [1.5.3](htt...

Ubuntu Security Notice 6732-1 - Several security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

When a user uploads a csv file that contains an javascript payload a Cross-site Scripting (XSS) is triggered when the file is viewed. This is true for both cloud version and OSS version.

The password of database connections in AWS Glue is loaded into the website when a connection's edit page is requested. Principals with appropriate permissions can read the password. This behavior also increases the risk that database passwords will be intercepted by an attacker during transmission in the server response. Many types of vulnerabilities, such as broken access controls, cross site scripting and weaknesses in session handling, could enable an attacker to leverage this behavior to retrieve the passwords.

Ubuntu Security Notice 6731-1 - It was discovered that YARD before 0.9.11 does not block relative paths with an initial ../ sequence, which allows attackers to conduct directory traversal attacks and read arbitrary files. This issue only affected Ubuntu 16.04 LTS. It was discovered that yard before 0.9.20 is affected by a path traversal vulnerability, allowing HTTP requests to access arbitrary files under certain conditions. This issue only affected Ubuntu 18.04 LTS.

WordPress WP Video Playlist plugin version 1.1.1 suffers from a persistent cross site scripting vulnerability.

TCPDF before 6.7.4 mishandles calls that use HTML syntax.