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CVE-2026-34840

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critical advisory

OneUptime SAML SSO Authentication Bypass Vulnerability (CVE-2026-34840)

OneUptime versions prior to 10.0.42 are vulnerable to an authentication bypass due to improper SAML signature validation, allowing attackers to impersonate users by prepending unsigned assertions.

CVE-2026-34840 saml authentication-bypass webserver
2r 1t 1c