CVE-2024-51750 Element allows a malicious homeserver can modify events leading to unrenderable events or rooms
A malicious homeserver can send invalid messages causing Element Web and Desktop to fail rendering messages or entire rooms, resulting in denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-51750?
CVE-2024-51750 is a medium-severity denial of service vulnerability in element-hq element-web, published on 12 Nov 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Element is a Matrix web client built using the Matrix React SDK. A malicious homeserver can send invalid messages over federation which can prevent Element Web and Desktop from rendering single messages or the entire room containing them. This was patched in Element Web and Desktop 1.11.85.
Weakness: CWE-248
Which versions are affected by CVE-2024-51750?
How do I fix CVE-2024-51750?
No fix has been published for CVE-2024-51750 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-51750 being exploited?
There is no known exploitation of CVE-2024-51750 in the wild and no public exploit code.
Sources
Also known as GHSA-w36j-v56h-q9pc.