5.7
Medium
CVE-2026-15007 A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user to cause…
Description
A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user to cause service disruption by supplying a repository release notes configuration file containing deeply nested YAML. When release notes were generated, the configuration file was parsed without a nesting depth limit, causing excessive resource consumption that could render the instance unresponsive. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.17.18, 3.18.12, 3.19.9, 3.20.5, and 3.21.3. This vulnerability was reported via the GitHub Bug Bounty program.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Enterprise Server 3.21 | 3.21.0 → 3.21.2 | No fix stated |
| Enterprise Server 3.20 | 3.20.0 → 3.20.4 | No fix stated |
| Enterprise Server 3.19 | 3.19.0 → 3.19.8 | No fix stated |
| Enterprise Server 3.18 | 3.18.0 → 3.18.11 | No fix stated |
| Enterprise Server 3.17 | 3.17.0 → 3.17.17 | No fix stated |
Other CVEs of Enterprise Server
The 94 CVEs of Enterprise Server →
CVE-2026-118237
Out-of-bounds read vulnerability in GitHub Enterprise Server allowed disclosure of process memory in the Git service
5.3
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CVE-2026-110288
Cross-site request forgery vulnerability in GitHub Enterprise Server allowed deletion of stored ChatOps configuration through the Management Console
5.3
Medium
CVE-2026-104608
Use-after-free vulnerability in GitHub Enterprise Server allowed remote code execution in the Git service
7.7
High
CVE-2026-96890
A Server-Side Request Forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed a…
8.7
High