CVE-2026-32253 (GCVE-0-2026-32253)
Vulnerability from cvelistv5 – Published: 2026-05-22 17:07 – Updated: 2026-05-26 13:08
VLAI
EPSS
VEX
Title
Sunshine: Authentication bypass via improper client certificate validation
Summary
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.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-26 13:08 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/LizardByte/Sunshine/security/a… | x_refsource_CONFIRM |
| https://github.com/LizardByte/Sunshine/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| LizardByte | Sunshine |
Affected:
< 2026.516.143833
|
guessed |
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