OCTOBER 13, 2026
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Case File

CVE-2026-78428

HIGH · CVSS 8.8 EPSS 0.27% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-17 · Last synced 2026-10-13

CyberRota Analysis

AI-Generated

This vulnerability affects systems using SAML or OpenID Connect for authentication, allowing an attacker to potentially hijack another user's authenticated session during concurrent single sign-on (SSO) login attempts. The impact is significant, as it could lead to unauthorized access to sensitive information and user accounts. Organizations utilizing SSO with these protocols should prioritize remediation to protect against session hijacking risks.

Public Exploit Signal

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

GitHub PoC Links

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

CVE
CVE-2026-78428
Severity
HIGH
CVSS
8.8
EPSS
0.27%

Original NVD Description

For users authenticated through SAML or OpenID Connect (OIDC), this vulnerability can result in one user receiving another user's authenticated session when multiple SSO login attempts occur concurrently