CVE-2026-9106

UI misrepresentation vulnerability in GitHub Enterprise Server allowed unauthorized organization runner management via undisclosed OAuth scope on consent screen

MEDIUM
5.5
CVSS Score
Published: June 30, 2026 at 08:21 PM UTC
Updated: October 25, 2026 at 09:10 PM UTC
1 product affected across 1 vendorGitHub Enterprise Server

Using Enterprise Server by GitHub?

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

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A UI misrepresentation vulnerability was identified in GitHub Enterprise Server that allowed an OAuth application to gain unintended access to an organization's runner management. An attacker could exploit this by creating an OAuth application requesting the manage_runners:org scope and directing a victim user to authorize it, as the scope was not displayed on the authorization consent screen. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.21.2, 3.20.4, 3.19.8, 3.18.11, 3.17.17, 3.16.20. This vulnerability was reported via the GitHub Bug Bounty program.

Affected

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

v < 3.16.203.17.0 ≤ v < 3.17.173.18.0 ≤ v < 3.18.113.19.0 ≤ v < 3.19.83.20.0 ≤ v < 3.20.43.21.0 ≤ v < 3.21.23.16.03.17.03.18.03.19.03.20.03.21.0
Affected range stops below 3.16.20, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.17.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.18.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.19.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.20.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.21.2, so it looks safe — our inference, not a vendor statement

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

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-451

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