{"id":"CVE-2026-58201","state":"PUBLISHED","title":"Lokka: Azure Resource Manager URL path validation issue","description":"Lokka is a Model Context Protocol server for Microsoft 365, including Microsoft Graph and other services. Prior to 2.1.2, the Lokka-Microsoft tool in src/mcp/src/main.ts uses direct URL string concatenation to append the user-controlled path value to the management.azure.com base URL. A specially crafted path can alter URL authority parsing and cause an Azure Resource Manager bearer token to be sent to an unintended host. This issue is fixed in version 2.1.2.","publishedAt":"2026-09-15T16:48:58.802Z","updatedAt":"2026-09-15T19:01:50.538Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["merill lokka"],"affected":[{"vendor":"merill","product":"lokka","versions":[{"version":"< 2.1.2","status":"affected"}]}],"references":["https://github.com/merill/lokka/security/advisories/GHSA-g2gw-q38m-vjfc","https://github.com/merill/lokka/pull/47","https://github.com/merill/lokka/commit/babead878f44cc2face2f8ee55d8b706e420947e"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/58xxx/CVE-2026-58201.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-58201","state":"PUBLISHED","datePublished":"2026-09-15T16:48:58.802Z","dateUpdated":"2026-09-15T19:01:50.538Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-29T17:09:25.872Z"},"containers":{"cna":{"title":"Lokka: Azure Resource Manager URL path validation issue","descriptions":[{"lang":"en","value":"Lokka is a Model Context Protocol server for Microsoft 365, including Microsoft Graph and other services. Prior to 2.1.2, the Lokka-Microsoft tool in src/mcp/src/main.ts uses direct URL string concatenation to append the user-controlled path value to the management.azure.com base URL. A specially crafted path can alter URL authority parsing and cause an Azure Resource Manager bearer token to be sent to an unintended host. This issue is fixed in version 2.1.2."}],"affected":[{"vendor":"merill","product":"lokka","versions":[{"version":"< 2.1.2","status":"affected"}]}],"references":[{"url":"https://github.com/merill/lokka/security/advisories/GHSA-g2gw-q38m-vjfc","name":"https://github.com/merill/lokka/security/advisories/GHSA-g2gw-q38m-vjfc","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/merill/lokka/pull/47","name":"https://github.com/merill/lokka/pull/47","tags":["x_refsource_MISC"]},{"url":"https://github.com/merill/lokka/commit/babead878f44cc2face2f8ee55d8b706e420947e","name":"https://github.com/merill/lokka/commit/babead878f44cc2face2f8ee55d8b706e420947e","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-15T16:48:58.802Z"},"source":{"advisory":"GHSA-g2gw-q38m-vjfc","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-15T19:01:34.903589Z","id":"CVE-2026-58201","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-15T19:01:50.538Z"}}]}}}