MEDIUMVulnerability
Global

CVE-2026-55040: SharePoint Server Subscription Edition improper JWT validation lead to Arbitrary Account Login

·Source: r/blueteamsec

Updated:

Executive Summary

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Analysis

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Indicators of Compromise (1)

CVE (1)
CVE-2026-55040
NVDMITRE CVE
Source Attribution

Originally published by r/blueteamsec on Aug 15, 2026.

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