CVE-2026-55489

MediumCVSS 4.9/10Last modified Sep 16, 2026

Description

BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton presenters could submit a presentationId through /api/graphql that identified a presentation belonging to another meeting. akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/presentationpod/RemovePresentationPubMsgHdlr.scala did not verify the presentation's meeting identifier before deletion, allowing a presenter who knew the identifier to delete another meeting's presentation and disrupt its availability. This issue is fixed in version 3.0.29.

Metrics

CVSS 3.1 4.9/10CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L

Weakness enumeration

CWE-639

Affected software

No affected versions have been published.

Timeline

Published: Aug 20, 2026
Last modified: Sep 16, 2026
NVD status: Deferred

Related CVEs from 2026

CVE-2026-55497.5A vulnerability was determined in Tenda AC10 16.03.10.10_multi_TDE01. Affected by this issue is some unknown functionality of the file /webr CVE-2026-554906.5OpenWrt is a Linux operating system targeting embedded devices. Before v25.12.5, an integer underflow in handle_send_a() of the Emergency Ac CVE-2026-554915.4BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton failed to escape meetingName in record-and-playback/screen CVE-2026-554949.8Tugtainer is a self-hosted app for automating updates of Docker containers. Prior to version 1.30.4, Tugtainer Agent allows unauthenticated CVE-2026-554954.3Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the WOPI PUT_RELATIVE handler passes X-WOPI-SuggestedTarget CVE-2026-554964.3Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, GET /api/v4/user/search calls SearchActive without adding a CVE-2026-554976.5Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the built-in thumbnail and avatar image decoders limit compr CVE-2026-554984.8FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.15.0, FileRise public sha CVE-2026-554994.3Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, a single-file share event-stream subscription resolves the s CVE-2026-55508.8A vulnerability was identified in Tenda AC10 16.03.10.10_multi_TDE01. This affects the function fromSysToolChangePwd of the file /bin/httpd.CVE-2026-555009.99Router is an AI router & token saver. Prior to 0.4.80, the /api/settings/database endpoint allows full database export (containing all cred CVE-2026-555017.39Router is an AI router & token saver. Prior to 0.4.80, the dashboard login rate limiter in src/lib/auth/loginLimiter.js derives the client