CVE-2024-47779 Element Web vulnerable to potential exposure of access token via authenticated media
Attackers can expose access tokens via malicious widgets, potentially leading to account takeover in Element Web clients.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2024-47779?
CVE-2024-47779 is a high-severity vulnerability in element-hq element-web, published on 15 Oct 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Element is a Matrix web client built using the Matrix React SDK. Element Web versions 1.11.70 through 1.11.80 contain a vulnerability which can, under specially crafted conditions, lead to the access token becoming exposed to third parties. At least one vector has been identified internally, involving malicious widgets, but other vectors may exist. Note that despite superficial similarity to CVE-2024-47771, this is an entirely separate vulnerability, caused by a separate piece of code included only in Element Web. Element Web and Element Desktop share most but not all, of their code and this vulnerability exists in the part of the code base which is not shared between the projects. Users are strongly advised to upgrade to version 1.11.81 to remediate the issue. As a workaround, avoid granting permissions to untrusted widgets.
Weakness: CWE-200
Which versions are affected by CVE-2024-47779?
How do I fix CVE-2024-47779?
No fix has been published for CVE-2024-47779 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-47779 being exploited?
There is no known exploitation of CVE-2024-47779 in the wild and no public exploit code.
Sources
Also known as GHSA-3jm3-x98c-r34x.