{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-40451 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-40451 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-40451 is a medium-severity cross-site scripting vulnerability in DeepL Chrome browser extension, published on 22 Apr 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-2026-40451 and fix it if it is affected.\n\nWhat it is: CVE-2026-40451 is a medium-severity cross-site scripting vulnerability in DeepL Chrome browser extension, published on 22 Apr 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-2026-40451 in the wild and no public exploit code.\n\nAffected product: DeepL Chrome browser extension. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-40451/ (Markdown: https://insights.sbomify.com/CVE-2026-40451/index.md)","id":"CVE-2026-40451","markdown":"https://insights.sbomify.com/CVE-2026-40451/index.md","name":"CVE-2026-40451","record":{"aliases":[],"analysis":{"component_type":"browser","fix_type":"upgrade","impacts":["code_execution","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"DeepL Chrome extension","requires_auth":"none","summary":"An attacker can execute arbitrary scripts and inject malicious HTML into web pages viewed by users of the DeepL Chrome extension.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"DeepL Chrome browser extension versions from v1.22.0 to v.1.23.0 contain a cross-site scripting vulnerability, which allows an attacker to execute arbitrary script in a user's browser, and inject malicious HTML into web pages viewed by the user.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Cross-site scripting in Chrome browser extension","id":"CVE-2026-40451","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Missing authorization in Apache IoTDB","id":"CVE-2026-40452"},"packages":[],"prev":{"headline":"Integer overflow in ONE","id":"CVE-2026-40450"},"products":["Chrome browser extension"],"published":"2026-04-22","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-04-22","vendors":["DeepL"]},"summary":"An attacker can execute arbitrary scripts and inject malicious HTML into web pages viewed by users of the DeepL Chrome extension.","url":"https://insights.sbomify.com/CVE-2026-40451/"}