{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2017-20290 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2017-20290 yet. Limit exposure of the affected software until one is available.","what":"CVE-2017-20290 is a medium-severity vulnerability in Discourse, published on 22 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2017-20290 and fix it if it is affected.\n\nWhat it is: CVE-2017-20290 is a medium-severity vulnerability in Discourse, published on 22 Oct 2026. \nExploitation: There is no known exploitation of CVE-2017-20290 in the wild and no public exploit code.\n\nAffected product: Discourse. 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-2017-20290/ (Markdown: https://insights.sbomify.com/CVE-2017-20290/index.md)","id":"CVE-2017-20290","markdown":"https://insights.sbomify.com/CVE-2017-20290/index.md","name":"CVE-2017-20290","record":{"aliases":["GHSA-9225-76qg-xfwx"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","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":"Discourse 1.9.0.beta2 before 1.9.0.beta13 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts through the email parameter of /email/unsubscribed. Attackers can craft GET requests with SVG onload payloads, which unsubscribed.html.erb renders unescaped via html_safe, executing JavaScript in victims' browsers. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-19.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Discourse \u003c 1.9.0.beta13 Reflected XSS via /email/unsubscribed","id":"CVE-2017-20290","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2017"},"n_packages":0,"n_references":4,"next":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2017-1000000"},"packages":[],"prev":{"headline":"Broadstreet Ad Widget WordPress Plugin \u003c 2.12.0 Local File Inclusion via step parameter","id":"CVE-2017-20289"},"products":["Discourse"],"published":"2026-10-22","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-22","vendors":["Discourse"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2017-20290/"}