CVE-2026-32253

9.8 CRITICAL

Sunshine is a self-hosted game stream host for Moonlight

Published: 2026-05-22 · Last updated: 2026-05-26

Severity and scoring

CVSS: 9.8 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-287, CWE-295

Affected products

Vendor	Product
lizardbyte	sunshine

Description

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: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-32253
[Other]https://github.com/LizardByte/Sunshine/releases/tag/v2026.516.143833
[Vendor advisory]https://github.com/LizardByte/Sunshine/security/advisories/GHSA-ph75-mgxh-mv57
[Vendor advisory]https://github.com/LizardByte/Sunshine/security/advisories/GHSA-ph75-mgxh-mv57

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