{"id":"CVE-2026-86259","aliases":["EUVD-2026-72126","GHSA-6j8v-fv4p-986p","GHSA-9m7h-vh2h-rc3w"],"status":"published","title":"OpenMAIC before 1.0.1 SSRF via Environment-Gated URL Validation","description":"OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parameter to access sensitive cloud credentials and metadata.","severity":{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00416,"percentile":0.36336,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-306","CWE-918"],"published":"2026-09-06T12:37:50Z","modified":"2026-10-28T02:31:07Z","exploits":[{"source":"pocgithub","id":"uziii2208/CVE-2026-86259","title":"uziii2208/CVE-2026-86259","date":"2026-09-14","url":"https://github.com/uziii2208/CVE-2026-86259"}],"products":[{"vendor":"thu-maic","product":"openmaic"}],"references":[{"url":"https://github.com/THU-MAIC/OpenMAIC/security/advisories/GHSA-9m7h-vh2h-rc3w","tags":["vendor-advisory","exploit","advisory"]},{"url":"https://github.com/THU-MAIC/OpenMAIC/blob/v1.0.0/middleware.ts#L60-L63","tags":["technical-description","article"]},{"url":"https://github.com/THU-MAIC/OpenMAIC/blob/v1.0.0/app/api/generate/image/route.ts#L73-L78","tags":["technical-description","article"]},{"url":"https://github.com/THU-MAIC/OpenMAIC/releases/tag/v1.0.1","tags":["patch","release-notes","fix"]},{"url":"https://github.com/THU-MAIC/OpenMAIC","tags":["product","package"]},{"url":"https://www.vulncheck.com/advisories/openmaic-before-1.0.1-ssrf-via-environment-gated-url-validation","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86259","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-6j8v-fv4p-986p"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86259.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-86259","title":"OpenMAIC before 1.0.1 SSRF via Environment-Gated URL Validation","description":"OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parameter to access sensitive cloud credentials and metadata.","status":"published","published":"2026-09-06T12:37:50.155Z","modified":"2026-09-24T14:21:20.072Z","cvss":[{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:N/SA:N","level":"critical","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-918","CWE-306"],"updated_at":"2026-11-02T13:49:42.666099Z"}],"euvd":[{"id":"EUVD-2026-72126","description":"OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parameter to access sensitive cloud credentials and metadata.","status":"published","published":"2026-09-06T12:37:50Z","modified":"2026-09-24T14:21:20Z","cvss":[{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T17:27:57.402158Z"}],"ghsa":[{"id":"GHSA-6j8v-fv4p-986p","title":"OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds,...","description":"OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parameter to access sensitive cloud credentials and metadata.","status":"published","published":"2026-09-06T15:31:05Z","modified":"2026-09-06T15:31:06Z","cvss":[{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/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","level":"critical"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:11:25.773648Z"}],"nvd":[{"id":"CVE-2026-86259","description":"OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parameter to access sensitive cloud credentials and metadata.","status":"published","published":"2026-09-06T13:17:10.963Z","modified":"2026-09-10T19:58:20.507Z","cvss":[{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/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","level":"critical","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-306","CWE-918"],"updated_at":"2026-11-02T14:12:44.082631Z"}],"osv":[{"id":"CVE-2026-86259","title":"OpenMAIC before 1.0.1 SSRF via Environment-Gated URL Validation","description":"OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parameter to access sensitive cloud credentials and metadata.","status":"published","published":"2026-09-06T12:37:50.155Z","modified":"2026-10-28T02:31:07.34774603Z","cvss":[{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:N/SA:N","level":"critical"}],"cwes":["CWE-306","CWE-918"],"updated_at":"2026-11-02T15:45:18.825071Z"}]}}