CVE-2026-15996
EUVD-2026-5361105.08.2026, 21:16
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.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| github | enterprise_server | 𝑥 < 3.17.16 |
| github | enterprise_server | 3.18.0 ≤ 𝑥 < 3.18.10 |
| github | enterprise_server | 3.19.0 ≤ 𝑥 < 3.19.7 |
| github | enterprise_server | 3.20.0 ≤ 𝑥 < 3.20.3 |
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| github | github | 3.17.0 ≤ 𝑥 ≤ 3.17.15 | CNA |
| github | github | 3.18.0 ≤ 𝑥 ≤ 3.18.9 | CNA |
| github | github | 3.19.0 ≤ 𝑥 ≤ 3.19.6 | CNA |
| github | github | 3.20.0 ≤ 𝑥 ≤ 3.20.2 | CNA |
Common Weakness Enumeration
References