CVE-2026-7541 MEDIUM

CVE-2026-7541: Denial of service vulnerability in GitHub Enterprise Server allowed service disruption via unauthenticated API endpoint

Vendor Github
Product Enterprise Server
Weakness CWE-770 · Uncontrolled resource consumption
Published May 7, 2026
Last update May 8, 2026
View on NVD All CVEs

CVSS base score

6.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 7, 2026 CVE published
May 8, 2026 Record updated