CVE-2026-15007: CWE-770 Allocation of resources without limits or throttling in GitHub Enterprise Server
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.
AI Analysis
Technical Summary
This vulnerability (CWE-770) in GitHub Enterprise Server allows an authenticated user to trigger a denial of service by supplying a release notes configuration file containing deeply nested YAML. When the server generates release notes, it parses this file without enforcing a nesting depth limit, causing excessive resource consumption that can render the instance unresponsive. The issue affects all versions prior to 3.22 and was addressed in specific patch versions 3.17.18, 3.18.12, 3.19.9, 3.20.5, and 3.21.3. The vulnerability was reported through the GitHub Bug Bounty program.
Potential Impact
An authenticated user can cause denial of service by exhausting server resources during YAML parsing of release notes configuration files. This can lead to service disruption and unresponsiveness of the GitHub Enterprise Server instance.
Mitigation Recommendations
Fixes are available in GitHub Enterprise Server versions 3.17.18, 3.18.12, 3.19.9, 3.20.5, and 3.21.3. Users should upgrade to one of these versions or later to remediate the vulnerability. Patch status is confirmed by the vendor advisory. No additional mitigation steps are indicated.
CVE-2026-15007: CWE-770 Allocation of resources without limits or throttling in GitHub Enterprise Server
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.
CVSS v4.0
Score 5.7medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-770) in GitHub Enterprise Server allows an authenticated user to trigger a denial of service by supplying a release notes configuration file containing deeply nested YAML. When the server generates release notes, it parses this file without enforcing a nesting depth limit, causing excessive resource consumption that can render the instance unresponsive. The issue affects all versions prior to 3.22 and was addressed in specific patch versions 3.17.18, 3.18.12, 3.19.9, 3.20.5, and 3.21.3. The vulnerability was reported through the GitHub Bug Bounty program.
Potential Impact
An authenticated user can cause denial of service by exhausting server resources during YAML parsing of release notes configuration files. This can lead to service disruption and unresponsiveness of the GitHub Enterprise Server instance.
Mitigation Recommendations
Fixes are available in GitHub Enterprise Server versions 3.17.18, 3.18.12, 3.19.9, 3.20.5, and 3.21.3. Users should upgrade to one of these versions or later to remediate the vulnerability. Patch status is confirmed by the vendor advisory. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_P
- Date Reserved
- 2026-07-07T21:23:32.045Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5b5ebc2d1edb114c7fb812
Added to database: 07/18/2026, 11:08:44 UTC
Last enriched: 07/18/2026, 12:03:07 UTC
Last updated: 07/18/2026, 13:15:28 UTC
Views: 2
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