CVE-2026-32253

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.

• CWE-287
• CWE-295

• https://github.com/LizardByte/Sunshine/releases/tag/v2026.516.143833Product, Release Notes
• https://github.com/LizardByte/Sunshine/security/advisories/GHSA-ph75-mgxh-mv57Exploit, Vendor Advisory
• https://github.com/LizardByte/Sunshine/security/advisories/GHSA-ph75-mgxh-mv57Exploit, Vendor Advisory

Published

May 22, 2026

Last Modified

Jul 23, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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