CVE•Published 2026-07-16•Modified 2026-07-17•1 article on news•5 live references•NVD data
CVE-2026-46353
Vulnerability data via NVD (ingested)
CVSS v3.1
8.1
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
—
Weaknesses (CWE)
Description
BigBlueButton is an open-source virtual classroom. Prior to 3.0.21, bbb-web checksum validation could be bypassed when a presentationUploadExternalUrl parameter was supplied to API request handling in CreateMeeting.java and ValidationService.java, allowing a user to send valid requests to some endpoints without a checksum. This issue is fixed in version 3.0.21.
Timeline
Published 2026-07-16
Modified 2026-07-17
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-46353Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-46353Censys host search filtered to this CVE id.
grep.app
CVE-2026-46353Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-46353GitHub code search for direct mentions.
Google dork
"CVE-2026-46353" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.