{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-28953 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-28953 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-28953 is a medium-severity vulnerability in n/a, published on 19 Nov 2020. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-28953 and fix it if it is affected.\n\nWhat it is: CVE-2020-28953 is a medium-severity vulnerability in n/a, published on 19 Nov 2020. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-28953 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2020-28953/ (Markdown: https://insights.sbomify.com/CVE-2020-28953/index.md)","id":"CVE-2020-28953","markdown":"https://insights.sbomify.com/CVE-2020-28953/index.md","name":"CVE-2020-28953","record":{"aliases":["GHSA-5j2f-fr5v-53mc"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"BigBlueButton web conferencing","requires_auth":"low_privilege","summary":"Attackers can vote multiple times in a single poll, compromising the integrity of voting results in BigBlueButton web conferencing sessions.","user_interaction":"not_required","vuln_class":"business_logic"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"bigbluebutton","vendor":"bigbluebutton"}],"cvss":{"score":4.3,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[],"description":"In BigBlueButton before 2.2.29, a user can vote more than once in a single poll.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Business logic in n/a","id":"CVE-2020-28953","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"business_logic","year":"2020"},"n_packages":0,"n_references":2,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2020-28954"},"packages":[],"prev":{"headline":"Hardcoded credentials in n/a","id":"CVE-2020-28952"},"products":["n/a"],"published":"2020-11-19","related":[{"cvss_score":9.8,"headline":"Other in n/a","id":"CVE-2020-27602","kev_date_added":null,"published":"2020-10-21"},{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2020-27605","kev_date_added":null,"published":"2020-10-21"},{"cvss_score":9.8,"headline":"Path traversal in n/a","id":"CVE-2020-12443","kev_date_added":null,"published":"2020-04-29"},{"cvss_score":8.4,"headline":"Hardcoded credentials in n/a","id":"CVE-2020-27613","kev_date_added":null,"published":"2020-10-21"},{"cvss_score":8.1,"headline":"Cross-site Scripting (XSS) - Generic in bigbluebutton/bigbluebutton","id":"CVE-2021-4143","kev_date_added":null,"published":"2022-01-19"},{"cvss_score":7.5,"headline":"BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation","id":"CVE-2025-61601","kev_date_added":null,"published":"2025-10-09"},{"cvss_score":7.5,"headline":"BigBlueButton vulnerable to Chat DoS via invalid reactionEmojiId","id":"CVE-2025-61602","kev_date_added":null,"published":"2025-10-09"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can vote multiple times in a single poll, compromising the integrity of voting results in BigBlueButton web conferencing sessions.","url":"https://insights.sbomify.com/CVE-2020-28953/"}