CVE-2022-39257 — Matrix iOS SDK allows developers to build iOS apps compatible with Matrix
Matrix iOS SDK allows developers to build iOS apps compatible with Matrix. Prior to version 0.23.19, an attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some plat
Published
2022-09-28T20:55:10.000Z
Last modified
2025-04-23T16:54:28.718Z
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
01What is this vulnerability?
Matrix iOS SDK allows developers to build iOS apps compatible with Matrix. Prior to version 0.23.19, an attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be missing in others. This attack is possible due to the matrix-ios-sdk implementing a too…
02Affected products
| Vendor | Product | Versions |
|---|
| matrix-org | matrix | ios-sdk — < 0.23.19 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2022-09-28T20:55:10.000Z
- Last modified: 2025-04-23T16:54:28.718Z
09References
- matrix.org — https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-ma…
- github.com — https://github.com/matrix-org/matrix-ios-sdk/commit/5ca86c328a5faaab429c240551cb…
- github.com — https://github.com/matrix-org/matrix-ios-sdk/releases/tag/v0.23.19
- github.com — https://github.com/matrix-org/matrix-ios-sdk/security/advisories/GHSA-qxr3-5jmq-…
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