CVE-2026-15007: Denial of service vulnerability in GitHub Enterprise Server allowed service disruption via deeply nested YAML in release notes configuration
GitHub · Enterprise Server
Vendor fix available · Affected: GitHub Enterprise Server · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 51% of scored CVEs
DescriptionCVE.org
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 products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- GitHub · Enterprise Serverfrom 3.17.0 up to and including 3.17.17; from 3.18.0 up to and including 3.18.11; from 3.19.0 up to and including 3.19.8; from 3.20.0 up to and including 3.20.4; from 3.21.0 up to and including 3.21.2
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-15007 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.