CVE-2026-7541: GitHub Enterprise Server · Unthrottled Resource Allocation
Affects GitHub Enterprise ServerSource CVE Database V5
Not known to be exploited · CVSS 6.3 Medium · fixed in 3.20.2 : update GitHub Enterprise Server when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 32% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.20.2
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:UExploitation evidence
Disclosed: evidence found.
CVE published 7 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| GitHubEnterprise Server | Affected
| Fixed in– |
AI-suggested
Fixes are available in GitHub Enterprise Server versions 3.20.2, 3.19.6, 3.18.9, 3.17.15, and 3.16.18. Users should upgrade to one of these patched versions or later to remediate this vulnerability. Since this is not a cloud service, remediation depends on applying these updates. Patch status is confirmed by the vendor advisory embedded in the description.
Description
CVE-2026-7541 is a denial of service vulnerability in GitHub Enterprise Server versions prior to 3.21. An unauthenticated attacker can send crafted requests with deeply nested JSON payloads to an unauthenticated API endpoint, causing excessive CPU and memory consumption due to lack of size or depth limits in JSON parsing. This leads to service disruption. The issue was fixed in versions 3.20.2, 3.19.6, 3.18.
References
- docs.github.com/en/enterprise-server@3.16/admin/release-notes (opens in a new tab)
- docs.github.com/en/enterprise-server@3.17/admin/release-notes (opens in a new tab)
- docs.github.com/en/enterprise-server@3.18/admin/release-notes (opens in a new tab)
- docs.github.com/en/enterprise-server@3.19/admin/release-notes (opens in a new tab)
- docs.github.com/en/enterprise-server@3.20/admin/release-notes (opens in a new tab)