AUGUST 14, 2026
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Case File

CVE-2026-51584

CRITICAL · CVSS 9.8 EPSS 0.42% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-11 · Last synced 2026-08-14

CyberRota Analysis

AI-Generated

A vulnerability in usememos v0.27.1 allows remote attackers to take over user accounts by exploiting the SignIn handler, where SSO identity verification relies on a controllable identifier rather than a secure binding to the IdP's stable subject claim. This flaw poses a significant risk to any organization utilizing this version of usememos for authentication, particularly those relying on Single Sign-On (SSO) for user access. Organizations should prioritize patching or mitigating this vulnerability to protect against 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-2026-51584
Severity
CRITICAL
CVSS
9.8
EPSS
0.42%

Original NVD Description

An issue in usememos v0.27.1 allows a remote attacker to achieve account takeover via the ssoCredentials branch of the SignIn handler in server/router/api/v1/auth_service.go, because SSO identity is matched only on an attacker-controllable identifier without binding to the IdP's stable subject claim.