What’s Vulnerable › Vulnerabilities

CVE-2022-46257: Information disclosure in GitHub Enterprise Server leading to unauthorized viewing of private repository names

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-07 · updated 2026-06-17
• Weakness: CWE-200

Description

An information disclosure vulnerability was identified in GitHub Enterprise Server that allowed private repositories to be added to a GitHub Actions runner group via the API by a user who did not have access to those repositories, resulting in the repository names being shown in the UI. To exploit this vulnerability, an attacker would need access to the GHES instance, permissions to modify GitHub Actions runner groups, and successfully guess the obfuscated ID of private repositories. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.7 and was fixed in versions 3.3.17, 3.4.12, 3.5.9, 3.6.5. This vulnerability was reported via the GitHub Bug Bounty program.

Affected products

• GitHub Enterprise Server: from 3.3.0 before 3.3.17; from 3.4.0 before 3.4.12; from 3.5.0 before 3.5.9; from 3.6.0 before 3.6.5 — fixed in 3.3.17, 3.4.12, 3.5.9, 3.6.5

How to fix

Upgrade to a fixed version: GitHub Enterprise Server 3.3.17, 3.4.12, 3.5.9, 3.6.5. Check the vendor advisory for mitigations.

References

• https://docs.github.com/en/enterprise-server%403.3/admin/release-notes#3.3.17
• https://docs.github.com/en/enterprise-server%403.4/admin/release-notes#3.4.12
• https://docs.github.com/en/enterprise-server%403.5/admin/release-notes#3.5.9
• https://docs.github.com/en/enterprise-server%403.6/admin/release-notes#3.6.5
• https://docs.github.com/en/enterprise-server%403.3/admin/release-notes#3.3.17
• https://docs.github.com/en/enterprise-server%403.4/admin/release-notes#3.4.12
• https://docs.github.com/en/enterprise-server%403.5/admin/release-notes#3.5.9
• https://docs.github.com/en/enterprise-server%403.6/admin/release-notes#3.6.5

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