Microsoft SharePoint Weak Authentication Vulnerability

Description

References

• msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55040 · Patch
• sfewer-r7/CVE-2026-55040 · Exploit
• cisa.gov/known-exploited-vulnerabilities-catalog · Exploit
• rapid7.com/blog/post/ra-microsoft-sharepoint-jwt-token-authentication-bypass-cve-2026-55040 · US Government Resource
• CISA KEV · CVE-2026-55040

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