Vulnerability Description
The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.
CVSS Score
7.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L
Related Weaknesses (CWE)
References
- https://github.com/Nheko-Reborn/nheko/issues/1931
- https://github.com/matrix-org/matrix-spec/releases/tag/v1.16
- https://matrix.org/blog/2025/08/project-hydra-improving-state-res/
- https://matrix.org/blog/2025/08/security-release/
FAQ
What is CVE-2025-49090?
CVE-2025-49090 is a vulnerability with a CVSS score of 7.1 (HIGH). The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.
How severe is CVE-2025-49090?
CVE-2025-49090 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-49090?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.