CVE-2026-15007

published 2026-07-17

CVE-2026-15007: A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user to cause service disruption by supplying a…

Priority P3 37 medium 5.7 CVSS 4.0

AV N AC L AT N PR L UI N VC N VI N VA H SC N SI N SA H E U CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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

5 ranges

Vendor	Product	Version range	Fixed in
github	enterprise_server	3.17.0 – 3.17.17	—
github	enterprise_server	3.18.0 – 3.18.11	—
github	enterprise_server	3.19.0 – 3.19.8	—
github	enterprise_server	3.20.0 – 3.20.4	—
github	enterprise_server	3.21.0 – 3.21.2	—

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