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Vulnerability Details :

CVE-2025-8447

Summary
Assigner-GitHub_P
Assigner Org ID-82327ea3-741d-41e4-88f8-2cf9e791e760
Published At-26 Aug, 2025 | 01:42
Updated At-26 Aug, 2025 | 18:34
Rejected At-
Credits

Incorrect authorization vulnerability was identified in GitHub Enterprise Server that allowed read-only access

An improper access control vulnerability was identified in GitHub Enterprise Server that allowed users with access to any repository to retrieve limited code content from another repository by creating a diff between the repositories. To exploit this vulnerability, an attacker needed to know the name of a private repository along with its branches, tags, or commit SHAs that they could use to trigger compare/diff functionality and retrieve limited code without proper authorization. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.18, and was fixed in versions 3.14.17, 3.15.12, 3.16.8 and 3.17.5. This vulnerability was reported via the GitHub Bug Bounty program.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_P
Assigner Org ID:82327ea3-741d-41e4-88f8-2cf9e791e760
Published At:26 Aug, 2025 | 01:42
Updated At:26 Aug, 2025 | 18:34
Rejected At:
▼CVE Numbering Authority (CNA)
Incorrect authorization vulnerability was identified in GitHub Enterprise Server that allowed read-only access

An improper access control vulnerability was identified in GitHub Enterprise Server that allowed users with access to any repository to retrieve limited code content from another repository by creating a diff between the repositories. To exploit this vulnerability, an attacker needed to know the name of a private repository along with its branches, tags, or commit SHAs that they could use to trigger compare/diff functionality and retrieve limited code without proper authorization. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.18, and was fixed in versions 3.14.17, 3.15.12, 3.16.8 and 3.17.5. 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 3.14 through 3.14.16 (semver)
    • -> unaffectedfrom3.14.17
  • From 3.15 through 3.15.11 (semver)
    • -> unaffectedfrom3.15.12
  • From 3.16 through 3.16.7 (semver)
    • -> unaffectedfrom3.16.8
  • From 3.17 through 3.17.4 (semver)
    • -> unaffectedfrom3.17.5
Problem Types
TypeCWE IDDescription
CWECWE-639CWE-639 Authorization Bypass Through User-Controlled Key
Type: CWE
CWE ID: CWE-639
Description: CWE-639 Authorization Bypass Through User-Controlled Key
Metrics
VersionBase scoreBase severityVector
4.07.0HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Version: 4.0
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-180CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels
CAPEC ID: CAPEC-180
Description: CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels
Solutions
Configurations
Workarounds
Exploits
Credits
finder
furbreeze
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.17
N/A
https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.12
N/A
https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.8
N/A
https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.5
N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.17
Resource: N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.12
Resource: N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.8
Resource: N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.5
Resource: N/A
▼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
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:product-cna@github.com
Published At:26 Aug, 2025 | 02:15
Updated At:26 Aug, 2025 | 13:41

An improper access control vulnerability was identified in GitHub Enterprise Server that allowed users with access to any repository to retrieve limited code content from another repository by creating a diff between the repositories. To exploit this vulnerability, an attacker needed to know the name of a private repository along with its branches, tags, or commit SHAs that they could use to trigger compare/diff functionality and retrieve limited code without proper authorization. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.18, and was fixed in versions 3.14.17, 3.15.12, 3.16.8 and 3.17.5. 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
Secondary4.07.0HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/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: Secondary
Version: 4.0
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/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
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-639Secondaryproduct-cna@github.com
CWE ID: CWE-639
Type: Secondary
Source: product-cna@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.17product-cna@github.com
N/A
https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.12product-cna@github.com
N/A
https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.8product-cna@github.com
N/A
https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.5product-cna@github.com
N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.17
Source: product-cna@github.com
Resource: N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.12
Source: product-cna@github.com
Resource: N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.8
Source: product-cna@github.com
Resource: N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.5
Source: product-cna@github.com
Resource: N/A

Change History

0
Information is not available yet

Similar CVEs

1Records found
CVE-2023-46646
Matching Score-6
Assigner-GitHub, Inc. (Products Only)
ShareView Details
Matching Score-6
Assigner-GitHub, Inc. (Products Only)
CVSS Score-5.3||MEDIUM
EPSS-0.29% / 51.63%
||
7 Day CHG~0.00%
Published-21 Dec, 2023 | 20:45
Updated-16 Dec, 2024 | 19:07
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Improper access control in all versions of GitHub Enterprise Server allows unauthorized users to view private repository names via the "Get a check run" API endpoint. This vulnerability did not allow unauthorized access to any repository content besides the name. This vulnerability affected GitHub Enterprise Server version 3.7.0 and above and was fixed in version 3.17.19, 3.8.12, 3.9.7 3.10.4, and 3.11.0.

Action-Not Available
Vendor-GitHub, Inc.
Product-enterprise_serverEnterprise Server
CWE ID-CWE-639
Authorization Bypass Through User-Controlled Key
Details not found