Vulnerability DatabaseCVE-2025-54315
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CVE-2025-54315
Published:October 02, 2025
Updated:August 13, 2026
The Matrix specification before 1.16 (i.e., with a room version before 12) lacks create event uniqueness.
Related Resources (4)
https://matrix.org/blog/2025/08/project-hydra-improving-state-res/
https://nvd.nist.gov/vuln/detail/CVE-2025-54315
https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54315.json
https://github.com/matrix-org/matrix-spec/releases/tag/v1.16
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CVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
HIGH
Subsequent System Availability
LOW
CVSS v3
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
LOW
Weakness Type (CWE)
Improper Enforcement of a Single, Unique Action
CWE-837
EPSS
Base Score:
0.32