{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-32253","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-11T14:47:05.686Z","datePublished":"2026-05-22T17:07:04.619Z","dateUpdated":"2026-05-26T13:08:19.472Z"},"containers":{"cna":{"title":"Sunshine: Authentication bypass via improper client certificate validation","problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-295","lang":"en","description":"CWE-295: Improper Certificate Validation","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/LizardByte/Sunshine/security/advisories/GHSA-ph75-mgxh-mv57","tags":["x_refsource_CONFIRM"],"url":"https://github.com/LizardByte/Sunshine/security/advisories/GHSA-ph75-mgxh-mv57"},{"name":"https://github.com/LizardByte/Sunshine/releases/tag/v2026.516.143833","tags":["x_refsource_MISC"],"url":"https://github.com/LizardByte/Sunshine/releases/tag/v2026.516.143833"}],"affected":[{"vendor":"LizardByte","product":"Sunshine","versions":[{"version":"< 2026.516.143833","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-22T17:07:04.619Z"},"descriptions":[{"lang":"en","value":"Sunshine is a self-hosted game stream host for Moonlight. In versions prior to 2026.516.143833, the client-certificate authentication can be bypassed because of how OpenSSL verification results are handled. In src/crypto.cpp, the custom verify callback treats X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY, X509_V_ERR_CERT_NOT_YET_VALID, and X509_V_ERR_CERT_HAS_EXPIRED as success. This can allow an untrusted certificate to pass authentication and access protected HTTPS endpoints. This issue has been fixed in version 2026.516.143833."}],"source":{"advisory":"GHSA-ph75-mgxh-mv57","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/LizardByte/Sunshine/security/advisories/GHSA-ph75-mgxh-mv57","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-26T13:08:15.350117Z","id":"CVE-2026-32253","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-26T13:08:19.472Z"}}]}}