CVE-2026-5512 (GCVE-0-2026-5512)
Vulnerability from cvelistv5
Published
2026-04-21 22:12
Modified
2026-04-22 17:39
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-201 - Insertion of sensitive information into sent data
Summary
An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories by their numeric ID. The mobile upload policy API endpoint did not perform an early authorization check, and validation error messages included the full repository name for repositories the caller did not have access to. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, and 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| GitHub | Enterprise Server |
Version: 3.14.0 ≤ 3.14.25 Version: 3.15.0 ≤ 3.15.20 Version: 3.16.0 ≤ 3.16.16 Version: 3.17.0 ≤ 3.17.13 Version: 3.18.0 ≤ 3.18.7 Version: 3.19.0 ≤ 3.19.4 Version: 3.20.0 ≤ |
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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