{"answers":{"affected":"4 open source packages ship an affected version, including com.vaadin:vaadin-bom and com.vaadin:vaadin-server. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-36320 in the wild and no public exploit code.","fix":"Upgrade com.vaadin:vaadin-bom to 7.7.22 or later.","what":"CVE-2020-36320 is a high-severity denial of service vulnerability in Vaadin, published on 23 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-36320 and fix it if it is affected.\n\nWhat it is: CVE-2020-36320 is a high-severity denial of service vulnerability in Vaadin, published on 23 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-36320 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- com.vaadin:vaadin-bom (Maven): affected from 7.0.0.beta1; fixed in 7.7.22\n- com.vaadin:vaadin-bom (Maven): affected from 7.0.0.beta1; fixed in 7.7.22\n- com.vaadin:vaadin-server (Maven): affected from 7.0.0.beta1; fixed in 7.7.22\n- com.vaadin:vaadin-server (Maven): affected from 7.0.0.beta1; fixed in 7.7.22\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-2020-36320/ (Markdown: https://insights.sbomify.com/CVE-2020-36320/index.md)","id":"CVE-2020-36320","markdown":"https://insights.sbomify.com/CVE-2020-36320/index.md","name":"CVE-2020-36320","record":{"aliases":["GHSA-42j4-733x-5vcf"],"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":"none","summary":"Attackers can cause denial of service in Vaadin applications by submitting malicious email addresses that trigger excessive resource consumption in the EmailValidator.","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":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Unsafe validation RegEx in EmailValidator class in com.vaadin:vaadin-server versions 7.0.0 through 7.7.21 (Vaadin 7.0.0 through 7.7.21) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.","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":"Regular expression Denial of Service (ReDoS) in EmailValidator class in Vaadin 7","id":"CVE-2020-36320","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"denial_of_service","year":"2020"},"n_packages":4,"n_references":3,"next":{"headline":"Directory traversal in development mode handler in Vaadin 14 and 15-17","id":"CVE-2020-36321"},"packages":[{"ecosystem":"Maven","fixed":["7.7.22"],"introduced":["7.0.0.beta1"],"last_affected":[],"package":"com.vaadin:vaadin-bom","purl":null,"source":"GHSA-42j4-733x-5vcf"},{"ecosystem":"Maven","fixed":["7.7.22"],"introduced":["7.0.0.beta1"],"last_affected":[],"package":"com.vaadin:vaadin-bom","purl":"pkg:maven/com.vaadin/vaadin-bom","source":"GHSA-42j4-733x-5vcf"},{"ecosystem":"Maven","fixed":["7.7.22"],"introduced":["7.0.0.beta1"],"last_affected":[],"package":"com.vaadin:vaadin-server","purl":null,"source":"GHSA-42j4-733x-5vcf"},{"ecosystem":"Maven","fixed":["7.7.22"],"introduced":["7.0.0.beta1"],"last_affected":[],"package":"com.vaadin:vaadin-server","purl":"pkg:maven/com.vaadin/vaadin-server","source":"GHSA-42j4-733x-5vcf"}],"prev":{"headline":"Potential sensitive data exposure in applications using Vaadin 15","id":"CVE-2020-36319"},"products":["Vaadin","vaadin-server"],"published":"2021-04-23","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":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":"Attackers can cause denial of service in Vaadin applications by submitting malicious email addresses that trigger excessive resource consumption in the EmailValidator.","url":"https://insights.sbomify.com/CVE-2020-36320/"}