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NVD Vulnerability Details :
CVE-2026-7541
Analyzed
More InfoOfficial Page
Source-product-cna@github.com
View Known Exploited Vulnerability (KEV) details
Published At-07 May, 2026 | 22:16
Updated At-11 May, 2026 | 17:19

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.06.3MEDIUM
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Primary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CPE Matches
GitHub, Inc.
github
>>enterprise_server>>Versions before 3.16.18(exclusive)
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
GitHub, Inc.
github
>>enterprise_server>>Versions from 3.17.0(inclusive) to 3.17.15(exclusive)
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
GitHub, Inc.
github
>>enterprise_server>>Versions from 3.18.0(inclusive) to 3.18.9(exclusive)
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
GitHub, Inc.
github
>>enterprise_server>>Versions from 3.19.0(inclusive) to 3.19.6(exclusive)
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
GitHub, Inc.
github
>>enterprise_server>>Versions from 3.20.0(inclusive) to 3.20.2(exclusive)
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-770Secondaryproduct-cna@github.com
CWE ID: CWE-770
Type: Secondary
Source: product-cna@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.18product-cna@github.com
Release Notes
Vendor Advisory
https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.15product-cna@github.com
Release Notes
Vendor Advisory
https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.9product-cna@github.com
Release Notes
Vendor Advisory
https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.6product-cna@github.com
Release Notes
Vendor Advisory
https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.2product-cna@github.com
Release Notes
Vendor Advisory
Hyperlink: https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.18
Source: product-cna@github.com
Resource:
Release Notes
Vendor Advisory
Hyperlink: https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.15
Source: product-cna@github.com
Resource:
Release Notes
Vendor Advisory
Hyperlink: https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.9
Source: product-cna@github.com
Resource:
Release Notes
Vendor Advisory
Hyperlink: https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.6
Source: product-cna@github.com
Resource:
Release Notes
Vendor Advisory
Hyperlink: https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.2
Source: product-cna@github.com
Resource:
Release Notes
Vendor Advisory
Change History
0Changes found
Details not found