Is CVE-2026-7541 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 0%.

What products does CVE-2026-7541 affect?

Tracked products affected include GitHub Enterprise Server. Check the version you run to see whether it is affected.

How do I fix CVE-2026-7541?

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

CVE-2026-7541

Q: What is CVE-2026-7541?

CVE-2026-7541 is a high-severity software vulnerability (Resource exhaustion) with a CVSS score of 7.5. 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 endpoin

HIGH severity · CVSS 7.5 · Resource exhaustion

7.5CVSS HIGH

Summary

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.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)0%

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

GitHub Enterprise Server

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

CVE-2026-7541

Summary

Impact & exploitability

Affected products we track (1)

Recommendation

Additional information