Technology · RubyGems
nokogiri (RubyGems) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 73 vulnerabilities in nokogiri (RubyGems): 0 in the last 7 days and 19 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, Duplicate Advisory: Nokogiri does not check the return value from xmlC14NExecute, was published on 25 August 2026.
- Last 7 days
- 0
- Last 90 days
- 19
- Critical, all time
- 1
- Exploited in the wild
- 0
About nokogiri (RubyGems)
An open-source XML, HTML, SAX, and Reader parser for Ruby.
Latest nokogiri (RubyGems) vulnerabilities
- Duplicate Advisory: Nokogiri does not check the return value from xmlC14NExecutelowCVSS 3.1
- Nokogiri unchecked return value in canonicalize methodmediumCVSS 5.3
- Nokogiri CSS selector tokenizer ReDoShighCVSS 7.5
- Duplicate Advisory: Nokogiri XSLT transform has a memory leaklowCVSS 3.1
- Duplicate Advisory: Nokogiri CSS selector tokenizer has regular expression backtrackinglowCVSS 3.1
- Nokogiri XSLT transform memory leakmediumCVSS 5.3
- CVE-2026-79772: Nokogiri versions before 1.19.1 fail to check the return value from xmlC14NExecute in the canonicalize method, returning…mediumCVSS 5.3EPSS 0.3%
- CVE-2026-79771: Nokogiri versions before 1.19.3 contain a memory leak in the XSLT Stylesheet transform method when processing Ruby strings…mediumCVSS 5.3EPSS 0.4%
- CVE-2026-79770: Nokogiri versions before 1.19.3 contain regular expression denial of service vulnerabilities in the CSS selector tokenizer…highCVSS 7.5EPSS 0.5%
- CVE-2026-79769: Nokogiri invalid memory read in Node#initialize_copy_with_argsmediumCVSS 5.5EPSS 0.3%
- CVE-2025-71407: Rejected CVE duplicateinfo
- CVE-2025-71406: rejected duplicatelowCVSS 3.1
- CVE-2025-71346: duplicate rejected advisoryinfo
- CVE-2024-58377: duplicate rejectioninfo
- CVE-2023-54354: Rejected CVE duplicateinfo
- CVE-2022-51000: Rejected duplicate advisoryinfo
- CVE-2022-50999: Duplicate CVE entrylowCVSS 3.1
- CVE-2022-50998: duplicate rejectedinfo
- CVE-2021-47996: duplicate rejectioninfo
- CVE-2026-57438: Nokogiri use-after-free in XInclude processinginfoCVSS 2.2EPSS 0.1%
- CVE-2026-57437: Nokogiri use-after-free in XML::XPathContextmediumCVSS 4EPSS 0.4%
- CVE-2026-57436: Nokogiri use-after-free in Document root assignmentmediumCVSS 4EPSS 0.4%
- CVE-2026-57435: Nokogiri use-after-free in XML attribute value replacementmediumCVSS 4EPSS 0.5%
- CVE-2026-57434: Nokogiri NULL pointer dereference in XML Node wrapper classesmediumCVSS 4EPSS 0.5%
- CVE-2026-57236: Nokogiri use-after-free in Document encoding assignmentmediumCVSS 4EPSS 0.4%
Most severe nokogiri (RubyGems) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2019-11068: Nokogiri libxslt protection mechanism bypass via crafted URLcriticalCVSS 9.8EPSS 5.2%
- CVE-2019-13118: Nokogiri libxslt type confusion in xsl:number instructionhighCVSS 7.5EPSS 5.2%
- CVE-2019-18197: Nokogiri Use After Free in libxslt dependencyhighCVSS 7.5EPSS 4.4%
- CVE-2026-79770: Nokogiri versions before 1.19.3 contain regular expression denial of service vulnerabilities in the CSS selector tokenizer…highCVSS 7.5EPSS 0.5%
- Nokogiri CSS selector tokenizer ReDoShighCVSS 7.5
- Nokogiri out-of-bounds read in XML NodeSetmediumCVSS 6.3
- CVE-2026-79769: Nokogiri invalid memory read in Node#initialize_copy_with_argsmediumCVSS 5.5EPSS 0.3%
- CVE-2019-13117: Nokogiri uninitialized read in libxslt xsl:number processingmediumCVSS 5.3EPSS 6.5%
- CVE-2026-79771: Nokogiri versions before 1.19.3 contain a memory leak in the XSLT Stylesheet transform method when processing Ruby strings…mediumCVSS 5.3EPSS 0.4%
- CVE-2026-79772: Nokogiri versions before 1.19.1 fail to check the return value from xmlC14NExecute in the canonicalize method, returning…mediumCVSS 5.3EPSS 0.3%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 19 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/nokogiri.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "nokogiri (RubyGems) vulnerabilities", https://junglewise.ai/threats/technologies/nokogiri, 26 September 2026.