Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Github | Enterprise Server | < 3.16.18 |
Related Weaknesses (CWE)
References
- https://docs.github.com/en/[email protected]/admin/release-notes#3.16.18Release NotesVendor Advisory
- https://docs.github.com/en/[email protected]/admin/release-notes#3.17.15Release NotesVendor Advisory
- https://docs.github.com/en/[email protected]/admin/release-notes#3.18.9Release NotesVendor Advisory
- https://docs.github.com/en/[email protected]/admin/release-notes#3.19.6Release NotesVendor Advisory
- https://docs.github.com/en/[email protected]/admin/release-notes#3.20.2Release NotesVendor Advisory
FAQ
What is CVE-2026-7541?
CVE-2026-7541 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 pa...
How severe is CVE-2026-7541?
CVE-2026-7541 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-7541?
Check the references section above for vendor advisories and patch information. Affected products include: Github Enterprise Server.