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.
Published: 2026-09-17
Score: 7.6 High
EPSS: < 1% Very Low
KEV: No
Impact: Authentication Bypass
Action: Patch Immediately
AI Analysis

Impact

This vulnerability is an authentication bypass that allows an attacker to use SAML assertions intended for other services to gain access to the NeuVector platform. NeuVector accepts any SAML assertion without verifying that the audience matches the service, because the audit warning for a mismatched audience is ignored. As a result, a user who has legitimate access to any SAML‑enabled application within the same corporate identity provider can log into NeuVector without further authorization, effectively impersonating themselves on the target platform.

Affected Systems

The affected product is NeuVector. Specific version information is not disclosed in the CVE data, so all released builds of NeuVector are likely to be vulnerable until an official update is applied.

Risk and Exploitability

The CVSS score of 7.6 indicates a high severity, but the EPSS score of less than 1% suggests that exploit attempts are currently unlikely. The vulnerability is not listed in the CISA KEV catalog, reducing presumed urgency. The exploit vector is remote, relying on the delivery of a SAML assertion from any application the attacker can log into. An attacker who can obtain or forge such an assertion could bypass authentication and obtain unauthorized access to NeuVector resources.

Generated by OpenCVE AI on September 18, 2026 at 01:22 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest NeuVector security patch that properly validates the AudienceRestriction element in SAML assertions.
  • Configure NeuVector to reject any SAML assertion that does not contain a matching audience value, treating the mismatch as a fatal error.
  • If a patch is not yet available, restrict SAML SSO to only the IdP that is required for NeuVector and enforce strict role separation in the IdP to limit the scope of potential misuse.

Generated by OpenCVE AI on September 18, 2026 at 01:22 UTC.

Tracking

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Advisories

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History

Mon, 28 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
First Time appeared Suse
Suse github.com Neuvector Neuvector
CPEs cpe:2.3:a:suse:github.com_neuvector_neuvector:*:*:*:*:*:*:*:*
Vendors & Products Suse
Suse github.com Neuvector Neuvector

Fri, 18 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Neuvector
Neuvector neuvector
Vendors & Products Neuvector
Neuvector neuvector

Thu, 17 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 17 Sep 2026 09:45:00 +0000

Type Values Removed Values Added
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.
Title SAML Audience Confusion Allows Cross-SP Authentication
Weaknesses CWE-287
References
Metrics cvssV4_0

{'score': 7.6, 'vector': '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'}


Subscriptions

Neuvector Neuvector
Suse Github.com Neuvector Neuvector
cve-icon MITRE

Status: PUBLISHED

Assigner: suse

Published:

Updated: 2026-09-28T12:04:24.695Z

Reserved: 2026-08-24T15:33:13.665Z

Link: CVE-2026-78425

cve-icon Vulnrichment

Updated: 2026-09-17T12:12:25.531Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-17T10:17:02.427

Modified: 2026-09-28T13:17:22.317

Link: CVE-2026-78425

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-18T20:02:41Z

Weaknesses