{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-40126 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-40126 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-40126 is a medium-severity vulnerability in Cisco Umbrella Insights Virtual Appliance, published on 4 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-40126 and fix it if it is affected.\n\nWhat it is: CVE-2021-40126 is a medium-severity vulnerability in Cisco Umbrella Insights Virtual Appliance, published on 4 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-40126 in the wild and no public exploit code.\n\nAffected product: Cisco Umbrella Insights Virtual Appliance. 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-2021-40126/ (Markdown: https://insights.sbomify.com/CVE-2021-40126/index.md)","id":"CVE-2021-40126","markdown":"https://insights.sbomify.com/CVE-2021-40126/index.md","name":"CVE-2021-40126","record":{"aliases":["GHSA-qh32-c3pp-x33g"],"analysis":{"component_type":"cloud_service","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco Umbrella dashboard","requires_auth":"low_privilege","summary":"An authenticated attacker can enumerate user email addresses via descriptive error messages in the Cisco Umbrella dashboard.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"umbrella","vendor":"cisco"}],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-209","name":"Generation of Error Message Containing Sensitive Information"},{"id":"CWE-210","name":"Self-generated Error Message Containing Sensitive Information"}],"description":"A vulnerability in the web-based dashboard of Cisco Umbrella could allow an authenticated, remote attacker to perform an email enumeration attack against the Umbrella infrastructure. This vulnerability is due to an overly descriptive error message on the dashboard that appears when a user attempts to modify their email address when the new address already exists in the system. An attacker could exploit this vulnerability by attempting to modify the user's email address. A successful exploit could allow the attacker to enumerate email addresses of users in the system.","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 Umbrella Email Enumeration Vulnerability","id":"CVE-2021-40126","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Small Business 200, 300, and 500 Series Switches Web-Based Management Interface Denial of Service Vulnerability","id":"CVE-2021-40127"},"packages":[],"prev":{"headline":"Denial of service in Cisco Adaptive Security Appliance (ASA) Software","id":"CVE-2021-40125"},"products":["Cisco Umbrella Insights Virtual Appliance"],"published":"2021-11-04","related":[{"cvss_score":9.1,"headline":"Cisco Umbrella API Unauthorized Access Vulnerability","id":"CVE-2018-0435","kev_date_added":null,"published":"2018-10-05"},{"cvss_score":7.6,"headline":"Cisco Umbrella Dashboard Session Management Vulnerability","id":"CVE-2019-1807","kev_date_added":null,"published":"2019-05-03"},{"cvss_score":6.5,"headline":"Cisco Umbrella Link and CSV Formula Injection Vulnerabilities","id":"CVE-2021-1474","kev_date_added":null,"published":"2021-04-08"},{"cvss_score":6.5,"headline":"Cisco Umbrella Link and CSV Formula Injection Vulnerabilities","id":"CVE-2021-1475","kev_date_added":null,"published":"2021-04-08"},{"cvss_score":6.1,"headline":"Cisco Umbrella Cross-Site Scripting Vulnerability","id":"CVE-2019-1792","kev_date_added":null,"published":"2019-04-18"},{"cvss_score":5.3,"headline":"Cisco Umbrella Dashboard Packet Flood Vulnerability","id":"CVE-2021-1350","kev_date_added":null,"published":"2021-01-20"},{"cvss_score":4.8,"headline":"Cross-site scripting in Cisco Umbrella Dashboard","id":"CVE-2022-20969","kev_date_added":null,"published":"2022-11-03"}],"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":"2024-11-07","vendors":["Cisco"]},"summary":"An authenticated attacker can enumerate user email addresses via descriptive error messages in the Cisco Umbrella dashboard.","url":"https://insights.sbomify.com/CVE-2021-40126/"}