{"answers":{"affected":"2 open source packages ship an affected version, including actionview.","exploited":"There is no known exploitation of CVE-2026-126069 in the wild and no public exploit code.","exposure":"","fix":"Upgrade actionview to a fixed version for your release line: 8.0.5.2 or 8.1.4.1.","what":"CVE-2026-126069 is a medium-severity vulnerability in rails, published on 10 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-126069 and fix it if it is affected.\n\nWhat it is: CVE-2026-126069 is a medium-severity vulnerability in rails, published on 10 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-126069 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- actionview (RubyGems): affected all versions; fixed in 8.0.5.2\n- actionview (RubyGems): affected from 8.1.0.beta1; fixed in 8.1.4.1\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-2026-126069/ (Markdown: https://insights.sbomify.com/CVE-2026-126069/index.md)","id":"CVE-2026-126069","markdown":"https://insights.sbomify.com/CVE-2026-126069/index.md","name":"CVE-2026-126069","record":{"aliases":["DEBIAN-CVE-2026-126069","GHSA-68p9-83h6-5wpj","UBUNTU-CVE-2026-126069"],"analysis":null,"analysis_generated_by":null,"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":"Action View is a framework for handling view template lookup and rendering and provides view helpers for building HTML. Prior to 8.1.4.1 and 8.0.5.2, the fix for CVE-2026-33168 skips blank HTML attribute names in Action View tag helpers, but it tests the name before converting it to a string. A Symbol name made only of whitespace, such as :\" \", is not blank, because Symbol#blank? is Symbol#empty?, so it reaches the attribute escaping, which emits an attribute with no name and produces malformed HTML. The asset tag helpers, such as image_tag, video_tag and audio_tag, symbolize their options, so a whitespace String name passed to them takes the same path. A carefully crafted attribute value could then be misinterpreted by the browser as a separate attribute name, possibly leading to XSS. Applications that allow users to specify custom HTML attribute names are affected. This issue is fixed in versions 8.1.4.1 and 8.0.5.2.","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":"Action View: Possible XSS vulnerability in Action View tag helpers","id":"CVE-2026-126069","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"RubyGems","product":null,"products":[],"type":null,"year":"2026"},"n_packages":2,"n_references":5,"next":{"headline":"Action View: Possible XSS vulnerability in Action View strip_tags","id":"CVE-2026-126070"},"nickname":null,"packages":[{"ecosystem":"RubyGems","fixed":["8.0.5.2"],"introduced":["0"],"last_affected":[],"package":"actionview","purl":null,"source":"GHSA-68p9-83h6-5wpj"},{"ecosystem":"RubyGems","fixed":["8.1.4.1"],"introduced":["8.1.0.beta1"],"last_affected":[],"package":"actionview","purl":null,"source":"GHSA-68p9-83h6-5wpj"}],"prev":{"headline":"Action Mailbox: Possible signature replay in Action Mailbox Mailgun ingress","id":"CVE-2026-126068"},"products":["rails"],"published":"2026-11-10","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-11-10","vendors":["rails"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-126069/"}