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    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.

    Published:May 22, 2026
    Last Modified:May 26, 2026
    EPS:May 22, 2026
    EPSS Score:0.00036
    CVSS Score:9.8

    Affected Products

    Vendor
    Lizardbyte
    Product
    Sunshine

    Exploits

    https://github.com/LizardByte/Sunshine/security/advisories/GHSA-ph75-mgxh-mv57https://github.com/LizardByte/Sunshine/security/advisories/GHSA-ph75-mgxh-mv57

    Related CVEs

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    CVE-2025-53096 (CVSS 5.4) — Sunshine is a self-hosted game stream host for Moonlight. Prior to version 2025.628.4510, the web UI of Sunshi…
    CVE-2024-51738 (CVSS 7.7) — Sunshine is a self-hosted game stream host for Moonlight. In 0.23.1 and earlier, Sunshine's pairing protocol i…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High