{"id":"CVE-2026-106078","aliases":["EUVD-2026-111119","GHSA-2749-r626-88hf"],"status":"published","title":"A vulnerability allowing an unauthenticated attacker to bypass REST API authentication with a...","description":"A vulnerability allowing an unauthenticated attacker to bypass REST API authentication with a forged federation token and receive responses from REST API endpoints that do not call the Veeam Backup for Microsoft 365 backup service.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00261,"percentile":0.18018,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2026-10-27T16:16:58Z","modified":"2026-11-04T17:57:09Z","products":[{"vendor":"veeam","product":"backup for microsoft 365"}],"references":[{"url":"https://www.veeam.com/kb4957"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106078"},{"url":"https://github.com/advisories/GHSA-2749-r626-88hf"}],"sources":{"cve":[{"id":"CVE-2026-106078","description":"A vulnerability allowing an unauthenticated attacker to bypass REST API authentication with a forged federation token and receive responses from REST API endpoints that do not call the Veeam Backup for Microsoft 365 backup service.","status":"published","published":"2026-10-27T16:16:58.925Z","modified":"2026-11-04T17:57:09.773Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-347"],"updated_at":"2026-11-04T19:06:09.086833Z"}],"euvd":[{"id":"EUVD-2026-111119","description":"A vulnerability allowing an unauthenticated attacker to bypass REST API authentication with a forged federation token and receive responses from REST API endpoints that do not call the Veeam Backup for Microsoft 365 backup service.","status":"published","published":"2026-10-27T16:16:58Z","modified":"2026-11-04T17:57:09Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-04T19:12:51.694741Z"}],"ghsa":[{"id":"GHSA-2749-r626-88hf","title":"A vulnerability allowing an unauthenticated attacker to bypass REST API authentication with a...","description":"A vulnerability allowing an unauthenticated attacker to bypass REST API authentication with a forged federation token and receive responses from REST API endpoints that do not call the Veeam Backup for Microsoft 365 backup service.","status":"published","published":"2026-10-27T18:31:40Z","modified":"2026-10-27T18:31:45Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/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":"medium"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T15:14:30.732607Z"}],"nvd":[{"id":"CVE-2026-106078","description":"A vulnerability allowing an unauthenticated attacker to bypass REST API authentication with a forged federation token and receive responses from REST API endpoints that do not call the Veeam Backup for Microsoft 365 backup service.","status":"published","published":"2026-10-27T17:16:56.793Z","modified":"2026-11-04T18:17:35.4Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/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":"medium","assessor":"secondary"}],"cwes":["CWE-347"],"updated_at":"2026-11-04T20:08:23.117709Z"}]}}