CVE-2023-22381 json
Code injection in GitHub Enterprise Server leading to arbitrary environment variables in GitHub Actions
published 2023-03-02 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-26544
- cvss
- 4.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 58%
- public exploits
- 0
- none known
Summary
A code injection vulnerability was identified in GitHub Enterprise Server that allowed setting arbitrary environment variables from a single environment variable value in GitHub Actions when using a Windows based runner. To exploit this vulnerability, an attacker would need existing permission to control the value of environment variables for use with GitHub Actions. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.8.0 and was fixed in versions 3.4.15, 3.5.12, 3.6.8, 3.7.5. This vulnerability was reported via the GitHub Bug Bounty program.
Patch / fix
- GitHub Enterprise Server 3.4.15, 3.5.12, 3.6.8, 3.7.5, 3.8.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 20 mo ago
Exploit prediction
0.84% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.1 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- GitHub Enterprise Server
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
docs.github.com
/en/enterprise-server@3.7/admin/release-notes#3.7.5
release-notes
-
docs.github.com
/en/enterprise-server@3.6/admin/release-notes#3.6.8
release-notes
-
docs.github.com
/en/enterprise-server@3.5/admin/release-notes#3.5.12
release-notes
-
docs.github.com
/en/enterprise-server@3.4/admin/release-notes#3.4.15
release-notes
-
docs.github.com
/en/enterprise-server@3.8/admin/release-notes
release-notes
Sources
- CVE List CVE-2023-22381
- NVD CVE-2023-22381
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