CVE-2020-10517 json
Improper access control in GitHub Enterprise Server leading to the enumeration of private repository names
published 2020-08-27 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-2970
- cvss
- 4.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
An improper access control vulnerability was identified in GitHub Enterprise Server that allowed authenticated users of the instance to determine the names of unauthorized private repositories given their numerical IDs. This vulnerability did not allow unauthorized access to any repository content besides the name. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.22 and was fixed in versions 2.21.6, 2.20.15, and 2.19.21. This vulnerability was reported via the GitHub Bug Bounty program.
Patch / fix
- GitHub GitHub Enterprise Server 2.19.21, 2.20.15, 2.21.6
Exploit prediction
1.05% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Affected products
- GitHub GitHub Enterprise Server
Classification
- Weakness
-
- CWE-285 Improper Authorization
References
-
enterprise.github.com
/releases/2.19.21/notes
release-notes, vendor-advisory
-
enterprise.github.com
/releases/2.20.15/notes
release-notes, vendor-advisory
-
enterprise.github.com
/releases/2.21.6/notes
release-notes, vendor-advisory
Sources
- CVE List CVE-2020-10517
- NVD CVE-2020-10517
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