CVE-2025-31127 Information disclosure in element-x-android
An attacker controlling the well-known file can access media encryption keys for Element Call, compromising call confidentiality.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-31127?
CVE-2025-31127 is a medium-severity vulnerability in element-hq element-x-android, published on 3 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Element X Android is a Matrix Android Client provided by element.io. In Element X Android versions between 0.4.16 and 25.03.3, the entity in control of the element.json well-known file is able, under certain conditions, to get access to the media encryption keys used for an Element Call call. This vulnerability is fixed in 25.03.4.
Weakness: CWE-200
Which versions are affected by CVE-2025-31127?
How do I fix CVE-2025-31127?
No fix has been published for CVE-2025-31127 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-31127 being exploited?
There is no known exploitation of CVE-2025-31127 in the wild and no public exploit code.
Sources
Also known as GHSA-x2g5-f28j-p7w6.