Back
CVE-2021-41599
Improper control flow in GitHub Enterprise Server hosted Pages leads to remote code execution
High8.8EPSS 2.2%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_P
Description
A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.3 and was fixed in versions 3.0.21, 3.1.13, 3.2.5. This vulnerability was reported via the GitHub Bug Bounty program.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 2.2% · top 17% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Weakness
Affected products
GitHub · GitHub Enterprise Server
- affected 3.0 – < 3.0.21
- affected 3.1 – < 3.1.13
- affected 3.2 – < 3.2.5
References (3)
- https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.21 (opens in a new tab)x_refsource_MISCx_transferred
- https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.13 (opens in a new tab)x_refsource_MISCx_transferred
- https://docs.github.com/en/enterprise-server%403.2/admin/release-notes#3.2.5 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-41599)Record last updated .