CVE-2026-15996
High · 7.5CVSS
7.5
EPSS
0.8%
Published
Aug 5, 2026
CISA due date
—
The record
A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause excessive CPU consumption and exhaust the pool of request-handling worker processes by sending a crafted form-encoded HTTP POST request containing deeply nested parameters. Because request parameters were parsed before routing and authentication, any POST endpoint could be used to trigger the condition, which could render the instance unresponsive. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.3, 3.19.7, 3.18.10, and 3.17.16.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-92822 A flaw was found in libmodulemd. CWE-674
- CVE-2026-112895 Pillow is a Python imaging library. CWE-674
- CVE-2026-100354 kin-openapi is a Go project for handling OpenAPI files. CWE-674
- CVE-2026-109267 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 contains a stack overflow in the MSL… CWE-674
- CVE-2026-109264 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 contains uncontrolled recursion in… CWE-674
- CVE-2026-107678 FFmpeg through 9.0.2 contains a stack exhaustion vulnerability in… CWE-674
- CVE-2026-107208 ImageMagick is free and open-source software used for editing and manipulating digital… CWE-674
- CVE-2026-106572 ImageMagick is free and open-source software used for editing and manipulating digital… CWE-674