# loofah (RubyGems) vulnerabilities Source: https://junglewise.ai/threats/technologies/loofah Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/loofah.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 17 vulnerabilities in loofah (RubyGems): 6 in the last 7 days and 6 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-126209, was published on 12 November 2026. Nothing was published in the last eight weeks. ## Counts - Last 7 days: 6 - Last 30 days: 6 - Last 90 days: 6 - All time: 17 (0 critical, 0 exploited in the wild) ## About loofah (RubyGems) Loofah is an HTML/XML manipulation and sanitization library for Ruby. ## Latest loofah (RubyGems) vulnerabilities - [CVE-2026-126209: Loofah allowed_uri? XSS bypass via numeric character reference](https://junglewise.ai/threats/cve-2026-126209-loofah-is-a-general-library-for-manipulating-and-transforming) (medium, published 12 Nov 2026) - [CVE-2026-126208: Loofah SVG href sanitization bypass in textPath and mpath](https://junglewise.ai/threats/cve-2026-126208-loofah-is-a-general-library-for-manipulating-and-transforming) (medium, CVSS 4.7, published 12 Nov 2026) - [CVE-2026-126207: Loofah CSS url() sanitization bypass via escaped parentheses](https://junglewise.ai/threats/cve-2026-126207-loofah-css-url-sanitization-bypass-via-escaped-parentheses) (medium, CVSS 4.7, published 12 Nov 2026) - [CVE-2026-126206: Loofah HTML5 Scrub XSS bypass via HTML entity encoding in data URIs](https://junglewise.ai/threats/cve-2026-126206-loofah-allowed-uri-treats-data-text-sol-html-as-safe-text-plain) (medium, published 12 Nov 2026) - [CVE-2026-126205: Loofah regular expression denial of service in SVG local-reference check](https://junglewise.ai/threats/cve-2026-126205-loofah-regular-expression-denial-of-service-in-the-svg-local) (medium, CVSS 5.3, published 12 Nov 2026) - [CVE-2026-126203: Loofah HTML5 scrubber markup injection with Nokogiri](https://junglewise.ai/threats/cve-2026-126203-loofah-is-a-general-library-for-manipulating-and-transforming) (medium, CVSS 6.1, published 12 Nov 2026) - [CVE-2026-73492: Loofah XSS via malformed URI scheme with numeric character references](https://junglewise.ai/threats/cve-2026-73492-loofah-xss-via-malformed-uri-scheme-with-numeric-character) (medium, CVSS 4, published 12 Aug 2026) - [CVE-2026-73491: Loofah HTML5 Scrub javascript URI scheme bypass](https://junglewise.ai/threats/cve-2026-73491-loofah-html5-scrub-javascript-uri-scheme-bypass) (medium, CVSS 4, published 12 Aug 2026) - [CVE-2026-73490: Loofah HTML5 sanitizer SVG href attribute bypass](https://junglewise.ai/threats/cve-2026-73490-loofah-html5-sanitizer-svg-href-attribute-bypass) (medium, CVSS 4.7, published 12 Aug 2026) - [Loofah has improper detection of disallowed URIs via `allowed_uri?`](https://junglewise.ai/threats/loofah-has-improper-detection-of-disallowed-uris-via-allowed-uri-2566883c) (medium, CVSS 4, published 26 Mar 2026) - [Improper detection of disallowed URIs by Loofah `allowed_uri?`](https://junglewise.ai/threats/improper-detection-of-disallowed-uris-by-loofah-allowed-uri-62203f6f) (medium, CVSS 4, published 18 Mar 2026) - [CVE-2022-23516: Uncontrolled Recursion in Loofah](https://junglewise.ai/threats/cve-2022-23516-uncontrolled-recursion-in-loofah) (low, CVSS 3.1, published 13 Dec 2022) - [CVE-2022-23515: Improper neutralization of data URIs may allow XSS in Loofah](https://junglewise.ai/threats/cve-2022-23515-improper-neutralization-of-data-uris-may-allow-xss-in-loofah) (low, CVSS 3.1, published 13 Dec 2022) - [CVE-2022-23514: Inefficient Regular Expression Complexity in Loofah](https://junglewise.ai/threats/cve-2022-23514-inefficient-regular-expression-complexity-in-loofah) (low, CVSS 3.1, published 13 Dec 2022) - [CVE-2019-15587: Loofah Allows Cross-site Scripting](https://junglewise.ai/threats/cve-2019-15587-loofah-allows-cross-site-scripting) (low, CVSS 3.1, published 5 Nov 2019) - [CVE-2018-16468: Loofah Cross-site Scripting vulnerability](https://junglewise.ai/threats/cve-2018-16468-loofah-cross-site-scripting-vulnerability) (low, CVSS 3, published 1 Nov 2018) - [CVE-2018-8048: Cross-site Scripting in loofah](https://junglewise.ai/threats/cve-2018-8048-cross-site-scripting-in-loofah) (low, CVSS 3, published 21 Mar 2018) ## Most severe loofah (RubyGems) vulnerabilities - [CVE-2026-126203: Loofah HTML5 scrubber markup injection with Nokogiri](https://junglewise.ai/threats/cve-2026-126203-loofah-is-a-general-library-for-manipulating-and-transforming) (medium, CVSS 6.1, published 12 Nov 2026) - [CVE-2026-126205: Loofah regular expression denial of service in SVG local-reference check](https://junglewise.ai/threats/cve-2026-126205-loofah-regular-expression-denial-of-service-in-the-svg-local) (medium, CVSS 5.3, published 12 Nov 2026) - [CVE-2026-73490: Loofah HTML5 sanitizer SVG href attribute bypass](https://junglewise.ai/threats/cve-2026-73490-loofah-html5-sanitizer-svg-href-attribute-bypass) (medium, CVSS 4.7, published 12 Aug 2026) - [CVE-2026-126208: Loofah SVG href sanitization bypass in textPath and mpath](https://junglewise.ai/threats/cve-2026-126208-loofah-is-a-general-library-for-manipulating-and-transforming) (medium, CVSS 4.7, published 12 Nov 2026) - [CVE-2026-126207: Loofah CSS url() sanitization bypass via escaped parentheses](https://junglewise.ai/threats/cve-2026-126207-loofah-css-url-sanitization-bypass-via-escaped-parentheses) (medium, CVSS 4.7, published 12 Nov 2026) - [CVE-2026-73492: Loofah XSS via malformed URI scheme with numeric character references](https://junglewise.ai/threats/cve-2026-73492-loofah-xss-via-malformed-uri-scheme-with-numeric-character) (medium, CVSS 4, published 12 Aug 2026) - [CVE-2026-73491: Loofah HTML5 Scrub javascript URI scheme bypass](https://junglewise.ai/threats/cve-2026-73491-loofah-html5-scrub-javascript-uri-scheme-bypass) (medium, CVSS 4, published 12 Aug 2026) - [Loofah has improper detection of disallowed URIs via `allowed_uri?`](https://junglewise.ai/threats/loofah-has-improper-detection-of-disallowed-uris-via-allowed-uri-2566883c) (medium, CVSS 4, published 26 Mar 2026) - [Improper detection of disallowed URIs by Loofah `allowed_uri?`](https://junglewise.ai/threats/improper-detection-of-disallowed-uris-by-loofah-allowed-uri-62203f6f) (medium, CVSS 4, published 18 Mar 2026) - [CVE-2026-126209: Loofah allowed_uri? XSS bypass via numeric character reference](https://junglewise.ai/threats/cve-2026-126209-loofah-is-a-general-library-for-manipulating-and-transforming) (medium, published 12 Nov 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 | 0 | 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 | 6 | 0 | 0 | ## Other RubyGems technologies - [actionpack (RubyGems)](https://junglewise.ai/threats/technologies/actionpack): 77 vulnerabilities - [nokogiri (RubyGems)](https://junglewise.ai/threats/technologies/nokogiri): 69 vulnerabilities - [rack (RubyGems)](https://junglewise.ai/threats/technologies/rack): 55 vulnerabilities - [activerecord (RubyGems)](https://junglewise.ai/threats/technologies/rubygems-activerecord): 26 vulnerabilities - [rubygems-update (RubyGems)](https://junglewise.ai/threats/technologies/rubygems-update): 25 vulnerabilities - [puppet (RubyGems)](https://junglewise.ai/threats/technologies/puppet): 23 vulnerabilities - [activesupport (RubyGems)](https://junglewise.ai/threats/technologies/activesupport): 20 vulnerabilities - [actionview (RubyGems)](https://junglewise.ai/threats/technologies/actionview): 19 vulnerabilities - [activestorage (RubyGems)](https://junglewise.ai/threats/technologies/activestorage): 19 vulnerabilities - [camaleon_cms (RubyGems)](https://junglewise.ai/threats/technologies/camaleon-cms): 19 vulnerabilities - [rails-html-sanitizer (RubyGems)](https://junglewise.ai/threats/technologies/rails-html-sanitizer): 18 vulnerabilities - [publify_core (RubyGems)](https://junglewise.ai/threats/technologies/publify-core): 15 vulnerabilities ## 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, "loofah (RubyGems) vulnerabilities", https://junglewise.ai/threats/technologies/loofah, 13 November 2026.