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Vulnerability Details :

CVE-2026-0573

Summary
Assigner-GitHub_P
Assigner Org ID-82327ea3-741d-41e4-88f8-2cf9e791e760
Published At-18 Feb, 2026 | 20:37
Updated At-18 Feb, 2026 | 21:20
Rejected At-
Credits

Improper Handling of HTTP Redirects vulnerability was identified in GitHub Enterprise Server that allowed leaking of authorization token and enabled remote code execution

An URL redirection vulnerability was identified in GitHub Enterprise Server that allowed attacker-controlled redirects to leak sensitive authorization tokens. The repository_pages API insecurely followed HTTP redirects when fetching artifact URLs, preserving the authorization header containing a privileged JWT. An authenticated user could redirect these requests to an attacker-controlled domain, exfiltrate the Actions.ManageOrgs JWT, and leverage it for potential remote code execution. Attackers would require access to the target GitHub Enterprise Server instance and the ability to exploit a legacy redirect to an attacker-controlled domain. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.19 and was fixed in versions 3.19.2, 3.18.4, 3.17.10, 3.16.13, 3.15.17, and 3.14.22. 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:18 Feb, 2026 | 20:37
Updated At:18 Feb, 2026 | 21:20
Rejected At:
▼CVE Numbering Authority (CNA)
Improper Handling of HTTP Redirects vulnerability was identified in GitHub Enterprise Server that allowed leaking of authorization token and enabled remote code execution

An URL redirection vulnerability was identified in GitHub Enterprise Server that allowed attacker-controlled redirects to leak sensitive authorization tokens. The repository_pages API insecurely followed HTTP redirects when fetching artifact URLs, preserving the authorization header containing a privileged JWT. An authenticated user could redirect these requests to an attacker-controlled domain, exfiltrate the Actions.ManageOrgs JWT, and leverage it for potential remote code execution. Attackers would require access to the target GitHub Enterprise Server instance and the ability to exploit a legacy redirect to an attacker-controlled domain. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.19 and was fixed in versions 3.19.2, 3.18.4, 3.17.10, 3.16.13, 3.15.17, and 3.14.22. 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 3.14.21 (semver)
    • -> unaffectedfrom3.14.22
  • From 3.15 through 3.15.16 (semver)
    • -> unaffectedfrom3.15.17
  • From 3.16 through 3.16.12 (semver)
    • -> unaffectedfrom3.16.13
  • From 3.17 through 3.17.9 (semver)
    • -> unaffectedfrom3.17.10
  • From 3.18 through 3.18.3 (semver)
    • -> unaffectedfrom3.18.4
  • From 3.19 through 3.19.1 (semver)
    • -> unaffectedfrom3.19.2
Problem Types
TypeCWE IDDescription
CWECWE-601CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
Type: CWE
CWE ID: CWE-601
Description: CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
Metrics
VersionBase scoreBase severityVector
4.07.6HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Version: 4.0
Base score: 7.6
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-178CAPEC-178 Cross-Site Flashing
CAPEC ID: CAPEC-178
Description: CAPEC-178 Cross-Site Flashing
Solutions

Configurations

Workarounds

Exploits

Credits

finder
R31n
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.22
release-notes
https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.17
release-notes
https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.13
release-notes
https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.10
release-notes
https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.4
release-notes
https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.2
release-notes
Hyperlink: https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.22
Resource:
release-notes
Hyperlink: https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.17
Resource:
release-notes
Hyperlink: https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.13
Resource:
release-notes
Hyperlink: https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.10
Resource:
release-notes
Hyperlink: https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.4
Resource:
release-notes
Hyperlink: https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.2
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
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:product-cna@github.com
Published At:18 Feb, 2026 | 21:16
Updated At:18 Feb, 2026 | 21:16

An URL redirection vulnerability was identified in GitHub Enterprise Server that allowed attacker-controlled redirects to leak sensitive authorization tokens. The repository_pages API insecurely followed HTTP redirects when fetching artifact URLs, preserving the authorization header containing a privileged JWT. An authenticated user could redirect these requests to an attacker-controlled domain, exfiltrate the Actions.ManageOrgs JWT, and leverage it for potential remote code execution. Attackers would require access to the target GitHub Enterprise Server instance and the ability to exploit a legacy redirect to an attacker-controlled domain. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.19 and was fixed in versions 3.19.2, 3.18.4, 3.17.10, 3.16.13, 3.15.17, and 3.14.22. 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
Secondary4.07.6HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/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: 7.6
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/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-601Secondaryproduct-cna@github.com
CWE ID: CWE-601
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#3.14.22product-cna@github.com
N/A
https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.17product-cna@github.com
N/A
https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.13product-cna@github.com
N/A
https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.10product-cna@github.com
N/A
https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.4product-cna@github.com
N/A
https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.2product-cna@github.com
N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.22
Source: product-cna@github.com
Resource: N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.17
Source: product-cna@github.com
Resource: N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.13
Source: product-cna@github.com
Resource: N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.10
Source: product-cna@github.com
Resource: N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.4
Source: product-cna@github.com
Resource: N/A
Hyperlink: https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.2
Source: product-cna@github.com
Resource: N/A

Change History

0
Information is not available yet

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