CVE-2026-111044

Disabled Sunshine clients can bypass revocation with a derived client certificate

HIGH
7.6
CVSS Score
Published: October 16, 2026 at 09:59 PM UTC
Updated: October 28, 2026 at 04:17 PM UTC
1 product affected across 1 vendorSunshine

Using Sunshine by LizardByte?

Get instant alerts when new vulnerabilities affect Sunshine - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.6
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Sunshine is a self-hosted game stream host for Moonlight. From 2026.329.165800 until 2026.906.222525, Sunshine accepted any client certificate that chained to a stored paired-client certificate, but it did not require the presented certificate to be the exact enabled paired identity. Certificate text was also compared without canonicalizing equivalent PEM encodings. A previously paired client that retains its private key can present an alternate certificate derived from its paired certificate and bypass the Disable control. Equivalent PEM encodings could also cause inconsistent client identity handling. A client that was never paired cannot use this issue, and removing the paired client removes its trust relationship. This issue is fixed in version 2026.906.222525.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

>= 2026.329.165800, < 2026.906.222525

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.6HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-863

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card