Media Encryption Key Exposure in Element X iOS Client by Element
CVE-2025-31126

5.3MEDIUM

Key Information:

Vendor

Element-hq

Status
Element-x-iOS
Vendor
CVE Published:
3 April 2025

What is CVE-2025-31126?

Element X iOS, a Matrix client developed by Element, is susceptible to an issue where an entity controlling the element.json well-known file can, under specific conditions, access sensitive media encryption keys utilized during Element Calls. This flaw compromises the confidentiality of communication and has been addressed in version 25.03.8.

Affected Version(s)

element-x-ios >= 1.6.13, < 25.03.8

References

https://github.com/element-hq/element-x-ios/security/advi...
x_refsource_CONFIRM
https://github.com/element-hq/element-meta/issues/2441
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.