{"cve":"CVE-2026-58201","nvd":{"published":"2026-09-15T17:17:23.260","modified":"2026-09-30T17:51:56.193","status":"Deferred","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.","cvss_v4":{"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","score":8.7},"cvss_v3":null,"cwes":["CWE-918"],"references":["https://github.com/merill/lokka/commit/babead878f44cc2face2f8ee55d8b706e420947e","https://github.com/merill/lokka/pull/47","https://github.com/merill/lokka/security/advisories/GHSA-g2gw-q38m-vjfc"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-58201","score":0.0048,"percentile":0.41123,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-g2gw-q38m-vjfc","url":"https://osv.dev/vulnerability/GHSA-g2gw-q38m-vjfc","summary":"Lokka: Azure Resource Manager URL path validation issue","modified":"2026-09-17T03:56:01.860448613Z","packages":[{"ecosystem":"npm","name":"@merill/lokka","purl":"pkg:npm/%40merill/lokka","ranges":["<2.1.2"],"fixed":["2.1.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}