# Nokogiri vulnerabilities

Source: https://junglewise.ai/threats/vendors/nokogiri  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 01:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/nokogiri.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 8 vulnerabilities in Nokogiri: 1 in the last 7 days and 4 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-126079, was published on 10 November 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 1
- Last 30 days: 1
- Last 90 days: 4
- All time: 8 (1 critical, 0 exploited in the wild)

## About Nokogiri

Nokogiri is a Ruby library for parsing and manipulating HTML and XML documents.

## Latest Nokogiri vulnerabilities

- [CVE-2026-126079: Rails Action View XSS via HTML5 sanitizer in text helpers](https://junglewise.ai/threats/cve-2026-126079-action-view-is-a-framework-for-handling-view-template-lookup-and) (medium, CVSS 6.1, published 10 Nov 2026)
- [Nokogiri unchecked return value in canonicalize method](https://junglewise.ai/threats/nokogiri-unchecked-return-value-in-canonicalize-method-3863de91) (medium, CVSS 5.3, published 25 Aug 2026)
- [Nokogiri XSLT transform memory leak](https://junglewise.ai/threats/nokogiri-xslt-transform-memory-leak-0441ddf7) (medium, CVSS 5.3, published 25 Aug 2026)
- [CVE-2026-79769: Nokogiri invalid memory read in Node#initialize_copy_with_args](https://junglewise.ai/threats/cve-2026-79769-nokogiri-invalid-memory-read-in-node-initialize-copy-with-args) (medium, CVSS 5.5, published 25 Aug 2026)
- [CVE-2019-18197: Nokogiri Use After Free in libxslt dependency](https://junglewise.ai/threats/cve-2019-18197-nokogiri-use-after-free-in-libxslt-dependency) (high, CVSS 7.5, published 24 May 2022)
- [CVE-2019-13118: Nokogiri libxslt type confusion in xsl:number instruction](https://junglewise.ai/threats/cve-2019-13118-nokogiri-libxslt-type-confusion-in-xsl-number-instruction) (high, CVSS 7.5, published 24 May 2022)
- [CVE-2019-13117: Nokogiri uninitialized read in libxslt xsl:number processing](https://junglewise.ai/threats/cve-2019-13117-nokogiri-uninitialized-read-in-libxslt-xsl-number-processing) (medium, CVSS 5.3, published 24 May 2022)
- [CVE-2019-11068: Nokogiri libxslt protection mechanism bypass via crafted URL](https://junglewise.ai/threats/cve-2019-11068-nokogiri-libxslt-protection-mechanism-bypass-via-crafted-url) (critical, CVSS 9.8, published 13 May 2022)

## Most severe Nokogiri vulnerabilities

- [CVE-2019-11068: Nokogiri libxslt protection mechanism bypass via crafted URL](https://junglewise.ai/threats/cve-2019-11068-nokogiri-libxslt-protection-mechanism-bypass-via-crafted-url) (critical, CVSS 9.8, published 13 May 2022)
- [CVE-2019-13118: Nokogiri libxslt type confusion in xsl:number instruction](https://junglewise.ai/threats/cve-2019-13118-nokogiri-libxslt-type-confusion-in-xsl-number-instruction) (high, CVSS 7.5, published 24 May 2022)
- [CVE-2019-18197: Nokogiri Use After Free in libxslt dependency](https://junglewise.ai/threats/cve-2019-18197-nokogiri-use-after-free-in-libxslt-dependency) (high, CVSS 7.5, published 24 May 2022)
- [CVE-2026-126079: Rails Action View XSS via HTML5 sanitizer in text helpers](https://junglewise.ai/threats/cve-2026-126079-action-view-is-a-framework-for-handling-view-template-lookup-and) (medium, CVSS 6.1, published 10 Nov 2026)
- [CVE-2026-79769: Nokogiri invalid memory read in Node#initialize_copy_with_args](https://junglewise.ai/threats/cve-2026-79769-nokogiri-invalid-memory-read-in-node-initialize-copy-with-args) (medium, CVSS 5.5, published 25 Aug 2026)
- [CVE-2019-13117: Nokogiri uninitialized read in libxslt xsl:number processing](https://junglewise.ai/threats/cve-2019-13117-nokogiri-uninitialized-read-in-libxslt-xsl-number-processing) (medium, CVSS 5.3, published 24 May 2022)
- [Nokogiri unchecked return value in canonicalize method](https://junglewise.ai/threats/nokogiri-unchecked-return-value-in-canonicalize-method-3863de91) (medium, CVSS 5.3, published 25 Aug 2026)
- [Nokogiri XSLT transform memory leak](https://junglewise.ai/threats/nokogiri-xslt-transform-memory-leak-0441ddf7) (medium, CVSS 5.3, published 25 Aug 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 3 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 1 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Nokogiri vulnerabilities", https://junglewise.ai/threats/vendors/nokogiri, 13 November 2026.