{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-46351 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-46351 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-46351 is a high-severity vulnerability in bigbluebutton, published on 16 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-46351 and fix it if it is affected.\n\nWhat it is: CVE-2026-46351 is a high-severity vulnerability in bigbluebutton, published on 16 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-46351 in the wild and no public exploit code.\n\nAffected product: bigbluebutton. 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-2026-46351/ (Markdown: https://insights.sbomify.com/CVE-2026-46351/index.md)","id":"CVE-2026-46351","markdown":"https://insights.sbomify.com/CVE-2026-46351/index.md","name":"CVE-2026-46351","record":{"aliases":["GHSA-7959-pf2v-xc4h"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Virtual classroom platform","requires_auth":"low_privilege","summary":"Attackers can predict conference session tokens due to insecure randomness, allowing them to impersonate other users in BigBlueButton virtual classrooms.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-330","name":"Use of Insufficiently Random Values"}],"description":"BigBlueButton is an open-source virtual classroom. Prior to 3.0.21, bbb-web generated conference sessionToken values with insufficiently secure randomness in bbb-common-web/src/main/java/org/bigbluebutton/api/Util.java and bigbluebutton-web/grails-app/controllers/org/bigbluebutton/web/controllers/ApiController.groovy, allowing a session user to predict other users' conference session tokens and impersonate them. This issue is fixed in version 3.0.21.","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":"BigBlueButton: Insecure Randomness allows to guess user's conference session token and impersonate them","id":"CVE-2026-46351","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"weak_cryptography","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Suricata defrag: fragmented encapsulated traffic with fragments can lead to deadlock","id":"CVE-2026-46352"},"packages":[],"prev":{"headline":"Mastodon: LD-Signature Bypass via JSON-LD Named-Graph Restructuring","id":"CVE-2026-46349"},"products":["bigbluebutton"],"published":"2026-07-16","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"total"},"state":"PUBLISHED","updated":"2026-07-17","vendors":["bigbluebutton"]},"summary":"Attackers can predict conference session tokens due to insecure randomness, allowing them to impersonate other users in BigBlueButton virtual classrooms.","url":"https://insights.sbomify.com/CVE-2026-46351/"}