CVE-2026-15007

The record

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 packages

Related vulnerabilities

• CVE-2026-119699 WPGraphQL Smart Cache before 2.3.3 contains an uncontrolled resource consumption… CWE-770
• CVE-2026-119701 WPGraphQL before 2.24.1 contains a missing rate limiting vulnerability that allows… CWE-770
• CVE-2026-119036 Business::GoCardless versions before 1.01 for Perl allow memory exhaustion by flattening… CWE-770
• CVE-2026-116128 Starlet versions from 0.20 before 0.33 for Perl allow memory exhaustion via unbounded… CWE-770
• CVE-2026-107312 Allocation of Resources Without Limits or Throttling vulnerability in Drupal Examples for… CWE-770
• CVE-2026-119209 pypdf is a free and open-source pure-python PDF library. CWE-770
• CVE-2026-90991 IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote authenticated attacker to… CWE-770
• CVE-2026-119134 Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 caps… CWE-770