{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-61568", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-10T16:48:39.924Z", "datePublished": "2026-09-15T20:56:11.723Z", "dateUpdated": "2026-09-15T20:56:11.723Z"}, "containers": {"cna": {"title": "@zereight/mcp-gitlab: DNS rebinding reaches local Streamable HTTP MCP transport", "problemTypes": [{"descriptions": [{"cweId": "CWE-350", "lang": "en", "description": "CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7"}, {"name": "https://github.com/zereight/gitlab-mcp/pull/555", "tags": ["x_refsource_MISC"], "url": "https://github.com/zereight/gitlab-mcp/pull/555"}, {"name": "https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290", "tags": ["x_refsource_MISC"], "url": "https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290"}, {"name": "https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30", "tags": ["x_refsource_MISC"], "url": "https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30"}], "affected": [{"vendor": "zereight", "product": "gitlab-mcp", "versions": [{"version": "< 2.1.30", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-15T20:56:11.723Z"}, "descriptions": [{"lang": "en", "value": "`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim's local MCP listener while preserving an attacker-controlled `Host` and `Origin`. The server accepts those headers and reaches the MCP initialization path instead of rejecting the request at the HTTP boundary. Version 2.1.30 contains a patch."}], "source": {"advisory": "GHSA-vmp7-252j-cwp7", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "gitlab-mcp", "vendor": "zereight", "versions": [{"status": "affected", "version": "< 2.1.30"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim's local MCP listener while preserving an attacker-controlled `Host` and `Origin`. The server accepts those headers and reaches the MCP initialization path instead of rejecting the request at the HTTP boundary. Version 2.1.30 contains a patch."}], "id": "CVE-2026-61568", "lastModified": "2026-09-15T21:16:41.570", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-15T21:16:41.570", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290"}, {"source": "security-advisories@github.com", "url": "https://github.com/zereight/gitlab-mcp/pull/555"}, {"source": "security-advisories@github.com", "url": "https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30"}, {"source": "security-advisories@github.com", "url": "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-350"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}