{"answers":{"affected":"2 open source packages ship an affected version, including com.vaadin:vaadin-bom. It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-31408 in the wild and no public exploit code.","fix":"Upgrade com.vaadin:vaadin-bom to 19.0.4 or later.","what":"CVE-2021-31408 is a medium-severity authentication bypass vulnerability in Vaadin, published on 23 Apr 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-31408 and fix it if it is affected.\n\nWhat it is: CVE-2021-31408 is a medium-severity authentication bypass vulnerability in Vaadin, published on 23 Apr 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-31408 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- com.vaadin:vaadin-bom (Maven): affected from 18.0.0; fixed in 19.0.4\n- com.vaadin:vaadin-bom (Maven): affected from 18.0.0; fixed in 19.0.4\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-2021-31408/ (Markdown: https://insights.sbomify.com/CVE-2021-31408/index.md)","id":"CVE-2021-31408","markdown":"https://insights.sbomify.com/CVE-2021-31408/index.md","name":"CVE-2021-31408","record":{"aliases":["GHSA-mr8h-j9cv-4m8h"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Vaadin Java library","requires_auth":"none","summary":"Local attackers can access protected endpoints after logout due to incorrect HTTP method usage in Vaadin's authentication module when CSRF protection is enabled.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Vaadin","cpe":[{"product":"flow","vendor":"vaadin"},{"product":"vaadin","vendor":"vaadin"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-613","name":"DEPRECATED: Insufficient Session Expiration"}],"description":"Authentication.logout() helper in com.vaadin:flow-client versions 5.0.0 prior to 6.0.0 (Vaadin 18), and 6.0.0 through 6.0.4 (Vaadin 19.0.0 through 19.0.3) uses incorrect HTTP method, which, in combination with Spring Security CSRF protection, allows local attackers to access Fusion endpoints after the user attempted to log out.","ecosystems":["Maven"],"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":"Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19","id":"CVE-2021-31408","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"auth_bypass","year":"2021"},"n_packages":2,"n_references":2,"next":{"headline":"Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19","id":"CVE-2021-31409"},"packages":[{"ecosystem":"Maven","fixed":["19.0.4"],"introduced":["18.0.0"],"last_affected":[],"package":"com.vaadin:vaadin-bom","purl":null,"source":"GHSA-mr8h-j9cv-4m8h"},{"ecosystem":"Maven","fixed":["19.0.4"],"introduced":["18.0.0"],"last_affected":[],"package":"com.vaadin:vaadin-bom","purl":"pkg:maven/com.vaadin/vaadin-bom","source":"GHSA-mr8h-j9cv-4m8h"}],"prev":{"headline":"Server classes and resources exposure in OSGi applications using Vaadin 12-14 and 19","id":"CVE-2021-31407"},"products":["Vaadin","flow-client"],"published":"2021-04-23","related":[{"cvss_score":8.6,"headline":"Server classes and resources exposure in OSGi applications using Vaadin 12-14 and 19","id":"CVE-2021-31407","kev_date_added":null,"published":"2021-04-23"},{"cvss_score":7.5,"headline":"Regular expression denial of service (ReDoS) in EmailField component in Vaadin 14 and 15-17","id":"CVE-2021-31405","kev_date_added":null,"published":"2021-04-23"},{"cvss_score":6.3,"headline":"Insecure temporary directory usage in frontend build functionality of Vaadin 14 and 15-19","id":"CVE-2021-31411","kev_date_added":null,"published":"2021-05-05"},{"cvss_score":6.1,"headline":"Reflected cross-site scripting in default RouteNotFoundError view in Vaadin 10 and 11-13","id":"CVE-2019-25027","kev_date_added":null,"published":"2021-04-23"},{"cvss_score":5.9,"headline":"Directory traversal in development mode handler in Vaadin 14 and 15-17","id":"CVE-2020-36321","kev_date_added":null,"published":"2021-04-23"},{"cvss_score":5.3,"headline":"Possible route enumeration in production mode via RouteNotFoundError view in Vaadin 10, 11-14, and 15-19","id":"CVE-2021-31412","kev_date_added":null,"published":"2021-06-24"}],"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":"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-17","vendors":["Vaadin"]},"summary":"Local attackers can access protected endpoints after logout due to incorrect HTTP method usage in Vaadin's authentication module when CSRF protection is enabled.","url":"https://insights.sbomify.com/CVE-2021-31408/"}