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.
Published: 2026-10-27
Score: 6.9 Medium
EPSS: n/a
KEV: No
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Remediation

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Tracking

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References
Link Providers
https://www.veeam.com/kb4957 cve-icon
History

Tue, 27 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-347
References
Metrics cvssV4_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'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-10-27T16:16:58.925Z

Reserved: 2026-10-06T15:00:00.655Z

Link: CVE-2026-106078

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses