CVE-2024-51749 Element's thumbnails can be abused to misrepresent the content of an attachment
Attackers can misrepresent attachment content via inconsistent thumbnails, tricking users into downloading malicious files in Element Web and Desktop 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-2024-51749?
CVE-2024-51749 is a low-severity vulnerability in element-hq element-web, published on 12 Nov 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. Versions of Element Web and Desktop earlier than 1.11.85 do not check if thumbnails for attachments, stickers and images are coherent. It is possible to add thumbnails to events trigger a file download once clicked. Fixed in element-web 1.11.85.
Weakness: CWE-451
Which versions are affected by CVE-2024-51749?
How do I fix CVE-2024-51749?
No fix has been published for CVE-2024-51749 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-51749 being exploited?
There is no known exploitation of CVE-2024-51749 in the wild and no public exploit code.
Sources
Also known as GHSA-5486-384g-mcx2.