AUGUST 15, 2026
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Case File

CVE-2026-55987

HIGH · CVSS 8.1 EPSS 0.16% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-13 · Last synced 2026-08-15

CyberRota Analysis

AI-Generated

The vulnerability allows OAuth2 sign-in to reactivate administrator-deactivated accounts on authentication sources that do not utilize refresh tokens, potentially leading to unauthorized access. This issue stems from an incomplete fix of a previous vulnerability, which could compromise account security and integrity. Organizations using affected authentication systems should prioritize addressing this vulnerability to prevent unauthorized account access.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-55987
Severity
HIGH
CVSS
8.1
EPSS
0.16%

Original NVD Description

OAuth2 sign-in reactivates an administrator-deactivated account on auth sources without refresh tokens (incomplete fix of #38009)