CVSS 3.1 Score 8.8 of 10 (high)


Published Dec 11, 2023
Updated: Dec 14, 2023
CWE ID 346
CWE ID 1385


CVE-2023-49805 is a vulnerability affecting Uptime Kuma, a self-hosted monitoring tool. Prior to version 1.23.9, the application does not verify the validity of the source of communication when using WebSocket with This allows third-party websites to access the application on behalf of their clients, potentially circumventing firewall protections put in place by users deploying the application. While authentication is still required for accessing most features, this vulnerability could allow attackers to establish connections to the server and potentially exploit unseen vulnerabilities. The vulnerability poses a high risk as it has a base severity rating of 8.8 out of 10 and could result in high impact on both confidentiality and integrity of an organization's data.

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