6.3
Medium
CVE-2026-7541 A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to…
Description
A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause service disruption by sending crafted requests with deeply nested JSON payloads to an unauthenticated API endpoint. The endpoint parsed user-controlled JSON request bodies without size or depth limits, causing excessive CPU and memory consumption. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.2, 3.19.6, 3.18.9, 3.17.15, and 3.16.18. This vulnerability was reported via the GitHub Bug Bounty program.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Enterprise Server 3.20 | 3.20.0 → 3.20.1 | No fix stated |
| Enterprise Server 3.19 | 3.19.0 → 3.19.5 | No fix stated |
| Enterprise Server 3.18 | 3.18.0 → 3.18.8 | No fix stated |
| Enterprise Server 3.17 | 3.17.0 → 3.17.14 | No fix stated |
| Enterprise Server 3.16 | 3.16.0 → 3.16.17 | No fix stated |
Other CVEs of Enterprise Server
The 94 CVEs of Enterprise Server →
CVE-2026-118237
Out-of-bounds read vulnerability in GitHub Enterprise Server allowed disclosure of process memory in the Git service
5.3
Medium
CVE-2026-110288
Cross-site request forgery vulnerability in GitHub Enterprise Server allowed deletion of stored ChatOps configuration through the Management Console
5.3
Medium
CVE-2026-104608
Use-after-free vulnerability in GitHub Enterprise Server allowed remote code execution in the Git service
7.7
High
CVE-2026-96890
A Server-Side Request Forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed a…
8.7
High