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CVE-2026-78428— Flaw in Nuevector can result in one user receiving another user's authenticated session when multiple SSO login attempts occur concurrently

Quick assessment

Affected
go neuvector
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

对于通过 SAML 或 OpenID Connect（OIDC）进行身份验证的用户，当多个 SSO 登录请求并发发生时，此漏洞可能导致某个用户收到另一个用户已认证会话的情况。

CVSS 8.0 · High

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-78428

Vulnerability Information
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Vulnerability Title
Flaw in Nuevector can result in one user receiving another user's authenticated session when multiple SSO login attempts occur concurrently
Source: CVE Program / CVE List V5
Vulnerability 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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
go neuvector <5.6.1 -

II. Public POCs for CVE-2026-78428

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III. Intelligence Information for CVE-2026-78428

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Vendor Advisories for CVE-2026-78428 (2)

Same Patch Batch · go · 2026-09-17 · 4 CVEs total

CVE-2026-78425 7.6 HIGH SAML Audience Confusion Allows Cross-SP Authentication
CVE-2026-78427 4.3 MEDIUM Admission Control Bypass via Hardcoded Sidecar Image Exemption
CVE-2026-78426 3.7 LOW Logout bypass via alternate JWT spelling

IV. Related Vulnerabilities

Same product: neuvector
Same vendor: go

V. Comments for CVE-2026-78428

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