{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-27737 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-27737 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-27737 is a medium-severity cross-site scripting vulnerability in bigbluebutton bbb-playback, published on 18 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-27737 and fix it if it is affected.\n\nWhat it is: CVE-2026-27737 is a medium-severity cross-site scripting vulnerability in bigbluebutton bbb-playback, published on 18 May 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-2026-27737 in the wild and no public exploit code.\n\nAffected product: bigbluebutton bbb-playback. 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-2026-27737/ (Markdown: https://insights.sbomify.com/CVE-2026-27737/index.md)","id":"CVE-2026-27737","markdown":"https://insights.sbomify.com/CVE-2026-27737/index.md","name":"CVE-2026-27737","record":{"aliases":["GHSA-8vv7-vj94-q2pv"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Virtual classroom platform","requires_auth":"low_privilege","summary":"Attackers can inject malicious scripts into public chat messages that execute when users replay recordings, potentially compromising viewer accounts.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.19, the recording playback (presentation format) was not sanitizing user's input in public chat. This allowed for a malicious actor to craft and carry out a targeted XSS attack, activated on anyone replaying the recording. This issue has been fixed 3.0.19.","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 has Stored XSS in bbb-playback replay","id":"CVE-2026-27737","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Angular SSR has an Open Redirect via X-Forwarded-Prefix","id":"CVE-2026-27738"},"packages":[],"prev":{"headline":"BigBlueButton has Open Redirect vulnerability in ApiController","id":"CVE-2026-27736"},"products":["bbb-playback","bigbluebutton","scalite"],"published":"2026-05-18","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":"partial"},"state":"PUBLISHED","updated":"2026-05-19","vendors":["bigbluebutton","blindsidenetworks"]},"summary":"Attackers can inject malicious scripts into public chat messages that execute when users replay recordings, potentially compromising viewer accounts.","url":"https://insights.sbomify.com/CVE-2026-27737/"}