# CVE-2025-66001: GO-2025-4235 - NeuVector OpenID Connect is vulnerable to man-in-the-middle (MITM) in github.com/neuvector/neuvector

Source: https://junglewise.ai/threats/cve-2025-66001-neuvector-openid-connect-is-vulnerable-to-man-in-the-middle-mitm  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-01-08  
License: CC BY 4.0 with a link back

CVE-2025-66001 · Severity: high · CVSS 8.8 · Published 2026-01-08

NeuVector supports login authentication through OpenID Connect. However, the TLS verification (which verifies the remote server's authenticity and integrity) for OpenID Connect is not enforced by default. As a result this may expose the system to man-in-the-middle (MITM) attacks.

Technologies: [github.com/neuvector/neuvector (Go)](https://junglewise.ai/threats/technologies/github-com-neuvector-neuvector). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2025-66001 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-66001 being exploited in the wild.

**How severe is CVE-2025-66001?** High severity, with a CVSS score of 8.8, published 8 January 2026.

**Which products and versions are affected?** github.com/neuvector/neuvector (Go) SEMVER:introduced=0, SEMVER:introduced=5.3.0,fixed=5.4.8.

**Is there a fix for CVE-2025-66001?** Yes. github.com/neuvector/neuvector (Go): upgrade to 5.4.8 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-66001?** Check whether you run github.com/neuvector/neuvector (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/neuvector/neuvector (Go): upgrade to 5.4.8 or later

  ```sh
  go get github.com/neuvector/neuvector@v5.4.8
  ```


## Affected products

- github.com/neuvector/neuvector (Go) SEMVER:introduced=0, SEMVER:introduced=5.3.0,fixed=5.4.8

## Identifiers

- CVE-2025-66001
- GHSA-4jj9-cgqc-x9h5
- GO-2025-4235

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