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CVE-2026-78425— SAML Audience Confusion Allows Cross-SP Authentication

Quick assessment

Affected
go github.com/neuvector/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.

对于与企业身份提供商（IdP）相同的、位于外部应用的授权用户（例如，维基、工单系统、报销工具，或任何其他他们合法拥有账户的系统），可以通过 SAML SSO 登录到 NeuVector。IdP 会向他们签发一个断言（Assertion）。如果该断言被提交给 NeuVector，NeuVector 会接受它。因为区分“面向 NeuVector 的断言”和“面向维基的断言”的唯一元素是 <Audience> 元素，而报告不匹配项的 警告从未被读取。

CVSS 7.6 · High
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I. Basic Information for CVE-2026-78425

Vulnerability Information
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Vulnerability Title
SAML Audience Confusion Allows Cross-SP Authentication
Source: CVE Program / CVE List V5
Vulnerability Description
Authorised users of outside applications behind the same corporate identity provider (IdP), for example, a wiki, a ticketing system, an expenses tool, or anything they legitimately hold an account on can log into their system via SAML SSO. The IdP issues an assertion to them. If that assertion is presented to NeuVector, NeuVector accepts it because the only thing distinguishing "an assertion for NeuVector" from "an assertion for the wiki" is the element, and the `NotInAudience` warning that reports the mismatch is never read.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
go github.com/neuvector/neuvector 0 ~ v5.6.1 -

II. Public POCs for CVE-2026-78425

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III. Intelligence Information for CVE-2026-78425

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Vendor Advisories for CVE-2026-78425 (1)

Vendor Pages for CVE-2026-78425 (1)

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

CVE-2026-78428 8.0 HIGH Flaw in Nuevector can result in one user receiving another user's authenticated session wh
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: github.com/neuvector/neuvector
Same vendor: go
Same weakness: CWE-287

V. Comments for CVE-2026-78425

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