{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-1420 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-1420 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-1420 is a medium-severity cross-site scripting vulnerability in Cisco Webex Meetings, published on 8 Apr 2021. 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-2021-1420 and fix it if it is affected.\n\nWhat it is: CVE-2021-1420 is a medium-severity cross-site scripting vulnerability in Cisco Webex Meetings, published on 8 Apr 2021. 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-2021-1420 in the wild and no public exploit code.\n\nAffected product: Cisco Webex Meetings. 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-2021-1420/ (Markdown: https://insights.sbomify.com/CVE-2021-1420/index.md)","id":"CVE-2021-1420","markdown":"https://insights.sbomify.com/CVE-2021-1420/index.md","name":"CVE-2021-1420","record":{"aliases":["GHSA-328f-3qhj-7364"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["security_bypass","other"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco Webex Meetings","requires_auth":"none","summary":"An attacker can inject HTML into Webex Meetings pages via crafted links, enabling redirects or client-side attacks against users.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"webex_meetings","vendor":"cisco"}],"cvss":{"score":4.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-80","name":"Improper Neutralization of Script-Related HTML Tags in a Web Page"}],"description":"A vulnerability in certain web pages of Cisco Webex Meetings could allow an unauthenticated, remote attacker to modify a web page in the context of a user's browser. The vulnerability is due to improper checks on parameter values in affected pages. An attacker could exploit this vulnerability by persuading a user to follow a crafted link that is designed to pass HTML code into an affected parameter. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks.","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":"Cisco Webex Meetings HTML Injection Vulnerability","id":"CVE-2021-1420","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"cisco:webex_meetings","products":["cisco:webex_meetings"],"type":"xss","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Enterprise NFV Infrastructure Software Command Injection Vulnerability","id":"CVE-2021-1421"},"packages":[],"prev":{"headline":"Cisco Access Points SSH Management Privilege Escalation Vulnerability","id":"CVE-2021-1419"},"products":["Cisco Webex Meetings"],"published":"2021-04-08","related":[{"cvss_score":9.6,"headline":"Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players","id":"CVE-2017-12368","kev_date_added":null,"published":"2017-11-30"},{"cvss_score":9.6,"headline":"Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players","id":"CVE-2017-12369","kev_date_added":null,"published":"2017-11-30"},{"cvss_score":9.6,"headline":"Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players","id":"CVE-2017-12370","kev_date_added":null,"published":"2017-11-30"},{"cvss_score":9.6,"headline":"Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players","id":"CVE-2017-12371","kev_date_added":null,"published":"2017-11-30"},{"cvss_score":9.6,"headline":"Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players","id":"CVE-2017-12372","kev_date_added":null,"published":"2017-11-30"},{"cvss_score":8.8,"headline":"Cisco Webex Meetings Desktop App for Mac Update Feature Code Execution Vulnerability","id":"CVE-2020-3342","kev_date_added":null,"published":"2020-06-18"},{"cvss_score":8.1,"headline":"Cisco Webex Meetings and Cisco Webex Meetings Server Token Handling Unauthorized Access Vulnerability","id":"CVE-2020-3361","kev_date_added":null,"published":"2020-06-18"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"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":"2024-11-08","vendors":["Cisco"]},"summary":"An attacker can inject HTML into Webex Meetings pages via crafted links, enabling redirects or client-side attacks against users.","url":"https://insights.sbomify.com/CVE-2021-1420/"}