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CVE Vulnerability Details :
CVE-2026-7541
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_P
Assigner Org ID-82327ea3-741d-41e4-88f8-2cf9e791e760
View Known Exploited Vulnerability (KEV) details
Published At-07 May, 2026 | 21:18
Updated At-08 May, 2026 | 13:44
Rejected At-
▼CVE Numbering Authority (CNA)
Denial of service vulnerability in GitHub Enterprise Server allowed service disruption via unauthenticated API endpoint

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.

Affected Products
Vendor
GitHub, Inc.GitHub
Product
Enterprise Server
Default Status
affected
Versions
Affected
  • From 3.16.0 through 3.16.17 (semver)
    • -> unaffectedfrom3.16.18
  • From 3.17.0 through 3.17.14 (semver)
    • -> unaffectedfrom3.17.15
  • From 3.18.0 through 3.18.8 (semver)
    • -> unaffectedfrom3.18.9
  • From 3.19.0 through 3.19.5 (semver)
    • -> unaffectedfrom3.19.6
  • From 3.20.0 through 3.20.1 (semver)
    • -> unaffectedfrom3.20.2
Problem Types
TypeCWE IDDescription
CWECWE-770CWE-770 Allocation of resources without limits or throttling
Type: CWE
CWE ID: CWE-770
Description: CWE-770 Allocation of resources without limits or throttling
Metrics
VersionBase scoreBase severityVector
4.06.3MEDIUM
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
Version: 4.0
Base score: 6.3
Base severity: MEDIUM
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
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-229CAPEC-229 Serialized Data Parameter Blowup
CAPEC ID: CAPEC-229
Description: CAPEC-229 Serialized Data Parameter Blowup
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Nguyen Nhat Anh (GitHub: anh2025)
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.18
release-notes
https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.15
release-notes
https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.9
release-notes
https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.6
release-notes
https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.2
release-notes
Hyperlink: https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.18
Resource:
release-notes
Hyperlink: https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.15
Resource:
release-notes
Hyperlink: https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.9
Resource:
release-notes
Hyperlink: https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.6
Resource:
release-notes
Hyperlink: https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.2
Resource:
release-notes
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found