{"answers":{"affected":"2 open source packages ship an affected version, including com.vaadin:vaadin-server. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-33609 in the wild and no public exploit code.","fix":"Upgrade com.vaadin:vaadin-server to 8.14.1 or later.","what":"CVE-2021-33609 is a medium-severity denial of service vulnerability in Vaadin, published on 13 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-33609 and fix it if it is affected.\n\nWhat it is: CVE-2021-33609 is a medium-severity denial of service vulnerability in Vaadin, published on 13 Oct 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-2021-33609 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- com.vaadin:vaadin-server (Maven): affected from 8.0.6; fixed in 8.14.1\n- com.vaadin:vaadin-server (Maven): affected from 8.0.6; fixed in 8.14.1\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-2021-33609/ (Markdown: https://insights.sbomify.com/CVE-2021-33609/index.md)","id":"CVE-2021-33609","markdown":"https://insights.sbomify.com/CVE-2021-33609/index.md","name":"CVE-2021-33609","record":{"aliases":["GHSA-qcgx-crrx-38v5"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Vaadin Java library","requires_auth":"low_privilege","summary":"An authenticated attacker can cause heap exhaustion and denial of service in Vaadin 8 by requesting excessive data rows.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Vaadin","cpe":[{"product":"vaadin","vendor":"vaadin"}],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Missing check in DataCommunicator class in com.vaadin:vaadin-server versions 8.0.0 through 8.14.0 (Vaadin 8.0.0 through 8.14.0) allows authenticated network attacker to cause heap exhaustion by requesting too many rows of data.","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":"Denial of service in DataCommunicator class in Vaadin 8","id":"CVE-2021-33609","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":2,"n_references":2,"next":{"headline":"Reflected cross-site scripting in vaadin-menu-bar webjar resources in Vaadin 14","id":"CVE-2021-33611"},"packages":[{"ecosystem":"Maven","fixed":["8.14.1"],"introduced":["8.0.6"],"last_affected":[],"package":"com.vaadin:vaadin-server","purl":null,"source":"GHSA-qcgx-crrx-38v5"},{"ecosystem":"Maven","fixed":["8.14.1"],"introduced":["8.0.6"],"last_affected":[],"package":"com.vaadin:vaadin-server","purl":"pkg:maven/com.vaadin/vaadin-server","source":"GHSA-qcgx-crrx-38v5"}],"prev":{"headline":"Unauthorized property update in CheckboxGroup component in Vaadin 12-14 and 15-20","id":"CVE-2021-33605"},"products":["Vaadin","vaadin-server"],"published":"2021-10-13","related":[{"cvss_score":7.5,"headline":"Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19","id":"CVE-2021-31409","kev_date_added":null,"published":"2021-05-05"},{"cvss_score":7.5,"headline":"Regular expression Denial of Service (ReDoS) in EmailValidator class in Vaadin 7","id":"CVE-2020-36320","kev_date_added":null,"published":"2021-04-23"},{"cvss_score":6.1,"headline":"Reflected cross-site scripting in vaadin-menu-bar webjar resources in Vaadin 14","id":"CVE-2021-33611","kev_date_added":null,"published":"2021-11-02"},{"cvss_score":5.7,"headline":"Possible information disclosure in non visible components","id":"CVE-2023-25499","kev_date_added":null,"published":"2023-06-22"},{"cvss_score":5.7,"headline":"Possible information disclosure inside TreeGrid component with default data provider","id":"CVE-2022-29567","kev_date_added":null,"published":"2022-05-24"},{"cvss_score":5.4,"headline":"Stored cross-site scripting in Grid component in Vaadin 7 and 8","id":"CVE-2019-25028","kev_date_added":null,"published":"2021-04-23"},{"cvss_score":5.3,"headline":"Unauthorized session creation via reserved framework path access","id":"CVE-2026-2742","kev_date_added":null,"published":"2026-03-10"}],"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":"2024-09-16","vendors":["Vaadin"]},"summary":"An authenticated attacker can cause heap exhaustion and denial of service in Vaadin 8 by requesting excessive data rows.","url":"https://insights.sbomify.com/CVE-2021-33609/"}