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VulnerabilityPublished

CVE-2026-9106: GitHub Enterprise Server · User Interface (UI) Misrepresentation of Critical Information

Affects GitHub Enterprise ServerSource CVE Database V5

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Not known to be exploited · CVSS 4.8 Medium · fixed in 3.21.2 : update GitHub Enterprise Server when convenient.

Data as of 12 Nov 2026, 23:25 UTC

CVSS 4.0 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.21.2
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
GitHubEnterprise ServerAffected
  • >=3.17.0 <3.17.17
  • >=3.18.0 <3.18.11
  • >=3.19.0 <3.19.8
  • >=3.20.0 <3.20.4
  • >=3.21.0 <3.21.2
  • >=3.16.0 <3.16.20
Fixed in–

AI-suggested

A fix is available and has been released in GitHub Enterprise Server versions 3.21.2, 3.20.4, 3.19.8, 3.18.11, 3.17.17, and 3.16.20. Organizations should upgrade to one of these fixed versions or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.

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.

References

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