CVE Watch16 jul 2026

CVE-2026-46353

BigBlueButton is an open-source virtual classroom. Prior to 3.0.21, bbb-web checksum validation could be bypassed when a presentationUploadE

CVSS

8.1

Alto

EPSS

—

KEV

—

Exploit Today

—

0-100

Publicado: 16 jul 2026 · Última mod.: 16 jul 2026 · CWE-284

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

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.

Referencias oficiales

CVEs relacionados

CVECVSSEPSSKEVRExplotTítuloVis.

CVE-2026-503517.8 ALT

83.0%

——25Improper access control in Windows Audio Compression Manager (ACM) allows an authorized attacker to elevate privileges locally.10h CVE-2026-504237.8 ALT

82.7%

——25Improper access control in Windows Kernel allows an authorized attacker to elevate privileges locally.2d CVE-2023-285319.8 CRÍ

81.1%

——24ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9.3d CVE-2026-393647.5 ALT

79.6%

——24Vite is a frontend tooling framework for JavaScript. From 7.1.0 to before 7.3.2 and 8.0.5, on the Vite dev server, files that should be blocked by server.fs.deny (e.g., .env, *.crt) can be retrieved with HTTP 200 responses when query parameters such as ?raw, ?import&raw, or ?import&url&inline are appended. This vulnerability is fixed in 7.3.2 and 8.0.5.2d CVE-2026-498057.0 ALT

79.5%

——24Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locally.10h CVE-2026-212628.8 ALT

79.0%

——24Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.6d