Vulnerability record · CVE-2026-83711 · published 3 September 2026

CVE-2026-83711: Insecure direct object reference vulnerability

Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.

10.0 CVSS 3.1 Critical EPSS 0.82% · top 44.7% CWE-639 · Insecure direct object reference Awaiting Analysis

10.0CVSS 3.1 base score

0.82%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

1References

8 Sep 2026Last modified by NVD

Description

Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

References

Link	Tags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83711

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.4CVE-2026-55255Langflow IDOR in responses endpoint allows cross-user flow executionLangflow before 1.9.1 has an insecure direct object reference in the /api/v1/responses endpoint. An authenticated attacker can supply another user's …KEVEPSS 0.89%analysed23 Jun 2026

Source: NIST National Vulnerability Database (record CVE-2026-83711), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.