# CVE-2025-71406: rejected duplicate

Source: https://junglewise.ai/threats/cve-2025-71406-rejected-duplicate  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-25. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2025-71406 · Severity: low · CVSS 3.1 · Published 2026-08-25

This CVE ID has been rejected by NVD as a duplicate of an existing vulnerability report. No technical details or affected products can be determined from the available information.

Technologies: [nokogiri (RubyGems)](https://junglewise.ai/threats/technologies/nokogiri). Vendors: [RubyGems](https://junglewise.ai/threats/vendors/rubygems).

## Quick answers

**Is CVE-2025-71406 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-71406 being exploited in the wild.

**How severe is CVE-2025-71406?** Low severity, with a CVSS score of 3.1, published 25 August 2026.

**Which products and versions are affected?** nokogiri (RubyGems) ECOSYSTEM:introduced=0,fixed=1.18.4.

**Is there a fix for CVE-2025-71406?** Yes. nokogiri (RubyGems): upgrade to 1.18.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-71406?** Check whether you run nokogiri (RubyGems) 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

- nokogiri (RubyGems): upgrade to 1.18.4 or later

  ```sh
  bundle update nokogiri
  ```


## Affected products

- nokogiri (RubyGems) ECOSYSTEM:introduced=0,fixed=1.18.4

## Identifiers

- CVE-2025-71406
- GHSA-mrxw-mxhj-p664

## Timeline

- 2026-08-25: other: CVE ID rejected as duplicate on NVD

## Related threats

- [Nokogiri use-after-free in attribute replacement](https://junglewise.ai/threats/cve-2026-126064-nokogiri-is-an-open-source-xml-and-html-library-for-the-ruby)
- [Nokogiri HTML5 serializer mutation XSS via noscript and attributes](https://junglewise.ai/threats/cve-2026-126063-nokogiri-is-an-open-source-xml-and-html-library-for-the-ruby)
- [JRuby: NONET is bypassed for external DTDs and entities when the systemId uses a short-form IPv4 host](https://junglewise.ai/threats/cve-2026-126062-nokogiri-is-an-open-source-xml-and-html-library-for-the-ruby)
- [Nokogiri unchecked return value in canonicalize method](https://junglewise.ai/threats/nokogiri-unchecked-return-value-in-canonicalize-method-3863de91)
- [Nokogiri XSLT transform memory leak](https://junglewise.ai/threats/nokogiri-xslt-transform-memory-leak-0441ddf7)