CVE-2026-32253

Published: May 22, 2026Modified: Jul 23, 2026

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: security-advisories@github.com (Secondary)

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.

Affected (1)

Products: Lizardbyte: Sunshine

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Lizardbyte Sunshine	Before 2026.516.143833

Related CWEs

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Improper Certificate Validation

The product does not validate, or incorrectly validates, a certificate.

References (3)

https://github.com/LizardByte/Sunshine/releases/tag/v2026.516.143833

Source: security-advisories@github.com

ProductRelease Notes

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

Source: security-advisories@github.com

ExploitVendor Advisory

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

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitVendor Advisory

Timeline

No history available yet.