{"answers":{"affected":"2 open source packages ship an affected version, including loofah.","exploited":"There is no known exploitation of CVE-2026-73490 in the wild and no public exploit code.","fix":"Upgrade loofah to 2.25.2 or later.","what":"CVE-2026-73490 is a medium-severity cross-site scripting vulnerability in flavorjones loofah, published on 12 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-73490 and fix it if it is affected.\n\nWhat it is: CVE-2026-73490 is a medium-severity cross-site scripting vulnerability in flavorjones loofah, published on 12 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-73490 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- loofah (RubyGems): affected all versions; fixed in 2.25.2\n- loofah (RubyGems): affected all versions; fixed in 2.25.2\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-73490/ (Markdown: https://insights.sbomify.com/CVE-2026-73490/index.md)","id":"CVE-2026-73490","markdown":"https://insights.sbomify.com/CVE-2026-73490/index.md","name":"CVE-2026-73490","record":{"aliases":["DEBIAN-CVE-2026-73490","GHSA-9wjq-cp2p-hrgf","UBUNTU-CVE-2026-73490"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Ruby HTML sanitizer","requires_auth":"none","summary":"Attackers can bypass SVG sanitization restrictions to inject scripts or track users via external references in applications using Loofah.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Prior to 2.25.2, Loofah's HTML5 sanitizer applies its local-reference restriction only to the xlink:href attribute on SVG use and feImage elements, while browsers also accept the plain href attribute. A crafted sanitized SVG can therefore reference an arbitrary same-origin external document; use may render external SVG content containing scripts or other dangerous content, and feImage may load external images for tracking. Applications that sanitize user-supplied SVG with Loofah's default allowlist are affected. This issue is fixed in version 2.25.2.","ecosystems":["RubyGems"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Loofah: SVG `href` attribute bypasses local-reference restriction","id":"CVE-2026-73490","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"RubyGems","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"Loofah `allowed_uri?` does not detect `javascript:` URIs split by named whitespace character references","id":"CVE-2026-73491"},"packages":[{"ecosystem":"RubyGems","fixed":["2.25.2"],"introduced":["0"],"last_affected":[],"package":"loofah","purl":null,"source":"GHSA-9wjq-cp2p-hrgf"},{"ecosystem":"RubyGems","fixed":["2.25.2"],"introduced":["0"],"last_affected":[],"package":"loofah","purl":"pkg:gem/loofah","source":"GHSA-9wjq-cp2p-hrgf"}],"prev":{"headline":"Russh: Post-auth remote panic via pty-req with more than 130 terminal-mode records","id":"CVE-2026-73489"},"products":["loofah"],"published":"2026-08-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-13","vendors":["flavorjones"]},"summary":"Attackers can bypass SVG sanitization restrictions to inject scripts or track users via external references in applications using Loofah.","url":"https://insights.sbomify.com/CVE-2026-73490/"}