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Vulnerability record · CVE-2026-9106 · published 30 June 2026

CVE-2026-9106: Github enterprise server vulnerability

Github · Enterprise Server

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.

4.8 CVSS 4.0 Medium EPSS 0.36% · top 72.3% CWE-451 · CWE-451
4.8CVSS 4.0 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
2 Jul 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.github.com/en/[email protected]/admin/release-notes#3.16.20 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.17.17 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.18.11 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.19.8 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.20.4 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.21.2 Release Notes

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-9106), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.