GitHub MCP Server is GitHub's official MCP Server. From 0.22.0 until 1.1.2, when running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requ...
Vendor
GitHub vulnerabilities
182 published CVES affecting GitHub, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 182
- Critical
- 23
- High
- 75
- Medium
- 80
- Low
- 3
- Unscored
- 1
- CISA KEV
- 0
Products
- Enterprise Server 132
- GitHub Enterprise Server 46
- cmark-gfm 11
- github 9
- cli 4
- Opensearch 3
- @github/copilot 2
- copilot-cli 2
- github-mcp-server 2
- github/codeql-action 2
- @github/paste-markdown 1
- 491-project 1
- actions toolkit 1
- actionsartifact 1
- codeql action 1
- codeql cli 1
- codeql-cli-binaries 1
- copilot command line interface 1
- gaug.es 1
- github.com/github/gh-ost 1
- github.com/github/git-sizer 1
- github.com/github/hub 1
- go-gh 1
- mcp server 1
- pull requests and issues 1
- runner 1
- secure_headers 1
- toolkit 1
- trilogy 1
- view_component 1
Latest GitHub CVEs
Newest publication first · page 2 of 8
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MediumCVSS 6.0 EPSS 0.17%
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CriticalCVSS 9.1 EPSS 0.29%
GitHub CLI (gh) is GitHub’s official command line tool. Prior to 2.93.0, GitHub CLI incorrectly includes authorization header in API requests to TUF repository mirrors via gh attestation, gh release verify, and gh release verify-asset commands. The CLI uses a shared HTTP client w...
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CriticalCVSS 9.2 EPSS 9.2%
A server-side request forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to send crafted requests to internal services by exploiting insufficient input validation in an upload endpoint. By injecting path traversal cont...
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HighCVSS 7.0 EPSS 0.49%
A Server-Side Request Forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed an attacker to cause the server to issue HTTP requests to internal services via the security advisories package lookup feature. By directing requests to an internal manageme...
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LowCVSS 3.5 EPSS 0.21%
gh is GitHub’s official command line tool. From 1.6.0 to before 2.92.0, a security vulnerability has been identified in GitHub CLI that could allow terminal escape sequence injection when users view GitHub Actions workflow logs using gh run view --log or gh run view --log-failed....
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HighCVSS 8.5 EPSS 0.35%
GitHub Copilot CLI brings AI-powered coding assistance directly to your command line. Prior to 1.0.43, a security vulnerability has been identified in GitHub Copilot CLI where a malicious bare git repository nested inside a project directory can achieve arbitrary code execution w...
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MediumCVSS 5.9 EPSS 0.16%
A reflected HTML injection vulnerability was identified in the GitHub Enterprise Server Management Console login page that could allow credential theft. The redirect_to query parameter on the /setup/unlock endpoint was reflected into an HTML attribute without proper sanitization,...
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HighCVSS 7.9 EPSS 0.52%
A server-side request forgery (SSRF) vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname valida...
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MediumCVSS 6.3 EPSS 0.39%
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 J...
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MediumCVSS 6.3 EPSS 0.27%
An authentication bypass vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to create a local user account, bypassing the configured external identity provider. When external authentication was enabled, the signup endpoint did not pr...
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HighCVSS 7.2 EPSS 0.29%
An improper authorization vulnerability in scoped user-to-server (ghu_) token authorization in GitHub Enterprise Server allows an authenticated attacker to access private repositories outside the intended installation scope, which can include write operations, via an authorizatio...
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MediumCVSS 5.3 EPSS 0.27%
An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed an attacker with admin access on one repository to modify the secret scanning push protection delegated bypass reviewer list on another repository by manipulating the owner_id parameter...
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MediumCVSS 5.3 EPSS 0.30%
An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories by their numeric ID. The mobile upload policy API endpoint did not perform an early authorization check, and va...
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HighCVSS 7.5 EPSS 0.43%
An incorrect regular expression vulnerability was identified in GitHub Enterprise Server that allowed an attacker to bypass OAuth redirect URI validation. An attacker with knowledge of a first-party OAuth application's registered callback URL could craft a malicious authorization...
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HighCVSS 8.9 EPSS 0.42%
A server-side request forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed an attacker to extract sensitive environment variables from the instance through a timing side-channel attack against the notebook rendering service. When private mode was d...
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MediumCVSS 5.3 EPSS 0.29%
An Incorrect Authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user with a classic personal access token (PAT) lacking the repo scope to retrieve issues and commits from private and internal repositories via the search REST API e...
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HighCVSS 7.4 EPSS 0.21%
An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed DOM-based cross-site scripting via task list content. The task list content extraction logic did not properly re-encode browser-decoded text nodes before rendering, allowing...
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MediumCVSS 5.3 EPSS 0.40%
An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed a user with read access to a repository and write access to a project to modify issue and pull request metadata through the project. When adding an item to a project that already exist...
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CVE-2026-3854 Remote code execution via git push option injection in GitHub Enterprise Server
PublishedHighCVSS 8.7 EPSS 41.9%An improper neutralization of special elements vulnerability was identified in GitHub Enterprise Server that allowed an attacker with push access to a repository to achieve remote code execution on the instance. During a git push operation, user-supplied push option values were n...
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HighCVSS 7.5 EPSS 0.47%
The shell tool within GitHub Copilot CLI versions prior to and including 0.0.422 can allow arbitrary code execution through crafted bash parameter expansion patterns. An attacker who can influence the commands executed by the agent (e.g., via prompt injection through repository f...
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HighCVSS 8.8 EPSS 0.27%
Webiness Inventory 2.3 contains an SQL injection vulnerability that allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the order parameter. Attackers can send POST requests to the WsModelGrid.php endpoint with crafted SQL payload...
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HighCVSS 7.1 EPSS 0.36%
An incorrect authorization vulnerability was identified in GitHub Enterprise Server that allowed an attacker to merge their own pull request into a repository without having push access by exploiting an authorization bypass in the enable_auto_merge mutation for pull requests. Thi...
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MediumCVSS 6.0 EPSS 0.46%
A Missing Authorization vulnerability was identified in GitHub Enterprise Server that allowed an attacker to upload unauthorized content to another user’s repository migration export due to a missing authorization check in the repository migration upload endpoint. By supplying th...
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HighCVSS 7.6 EPSS 0.74%
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 hea...
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HighCVSS 8.4 EPSS 0.22%
An Improper Neutralization of Input During Web Page Generation vulnerability was identified in GitHub Enterprise Server that allowed attacker controlled HTML to be rendered by the Filter component (search) across GitHub that could be used to exfiltrate sensitive information. An a...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.