{"answers":{"affected":"4 open source packages ship an affected version, including action_text-trix and trix.","exploited":"There is no known exploitation of CVE-2026-73428 in the wild and no public exploit code.","fix":"Upgrade action_text-trix to 2.1.18 or later.","what":"CVE-2026-73428 is a medium-severity cross-site scripting vulnerability in basecamp trix, published on 13 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-73428 and fix it if it is affected.\n\nWhat it is: CVE-2026-73428 is a medium-severity cross-site scripting vulnerability in basecamp trix, published on 13 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-73428 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- action_text-trix (RubyGems): affected all versions; fixed in 2.1.18\n- action_text-trix (RubyGems): affected all versions; fixed in 2.1.18\n- trix (npm): affected all versions; fixed in 2.1.18\n- trix (npm): affected all versions; fixed in 2.1.18\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-2026-73428/ (Markdown: https://insights.sbomify.com/CVE-2026-73428/index.md)","id":"CVE-2026-73428","markdown":"https://insights.sbomify.com/CVE-2026-73428/index.md","name":"CVE-2026-73428","record":{"aliases":["GHSA-53g2-mvcc-q9x3"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Trix rich text editor","requires_auth":"low_privilege","summary":"Attackers can inject malicious JavaScript via crafted HTML pastes in Trix, leading to stored XSS when other users interact with the content.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.6,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Prior to 2.1.18, Trix is vulnerable to stored cross-site scripting when crafted HTML is pasted into the editor. HTMLParser processes a mock attachment in a `\u003cspan\u003e` with an empty `data-trix-attachment=\"{}\"` value, causing data-trix-attributes to be applied to a plain string piece. StringPiece.fromJSON accepts an unvalidated href, allowing a javascript: URI to enter the document model and serialized HTML and execute when another user renders and clicks the content. Applications that apply server-side HTML sanitization can neutralize the payload on save. This issue is fixed in version 2.1.18.","ecosystems":["RubyGems","npm"],"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":"Trix: Stored XSS via HTMLParser attribute injection on paste","id":"CVE-2026-73428","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"RubyGems","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":4,"n_references":4,"next":{"headline":"Russh: client wrong-length X25519 `clone_from_slice` panic (pre-auth DoS)","id":"CVE-2026-73429"},"packages":[{"ecosystem":"RubyGems","fixed":["2.1.18"],"introduced":["0"],"last_affected":[],"package":"action_text-trix","purl":null,"source":"GHSA-53g2-mvcc-q9x3"},{"ecosystem":"RubyGems","fixed":["2.1.18"],"introduced":["0"],"last_affected":[],"package":"action_text-trix","purl":"pkg:gem/action_text-trix","source":"GHSA-53g2-mvcc-q9x3"},{"ecosystem":"npm","fixed":["2.1.18"],"introduced":["0"],"last_affected":[],"package":"trix","purl":null,"source":"GHSA-53g2-mvcc-q9x3"},{"ecosystem":"npm","fixed":["2.1.18"],"introduced":["0"],"last_affected":[],"package":"trix","purl":"pkg:npm/trix","source":"GHSA-53g2-mvcc-q9x3"}],"prev":{"headline":"Trix: XSS via JSON deserialization bypass in drag-and-drop (Level0InputController)","id":"CVE-2026-73427"},"products":["trix"],"published":"2026-08-13","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":"2026-08-14","vendors":["basecamp"]},"summary":"Attackers can inject malicious JavaScript via crafted HTML pastes in Trix, leading to stored XSS when other users interact with the content.","url":"https://insights.sbomify.com/CVE-2026-73428/"}