ByteOS Network

NVD Vulnerability Details :

CVE-2026-27736

Awaiting Analysis

Source-security-advisories@github.com

Published At-25 Feb, 2026 | 17:25

Updated At-27 Feb, 2026 | 14:06

BigBlueButton is an open-source virtual classroom. In versions on the 3.x branch prior to 3.0.20, the string received with errorRedirectUrl lacks validation, using it directly in the respondWithRedirect function leads to an Open Redirect vulnerability. BigBlueButton 3.0.20 patches the issue. No known workarounds are available.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	6.1	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Type: Secondary

Version: 3.1

Base score: 6.1

Base severity: MEDIUM

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weaknesses

CWE ID	Type	Source
CWE-601	Primary	security-advisories@github.com

CWE ID: CWE-601

Type: Primary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/bigbluebutton/bigbluebutton/commit/691f92f3af0d6b796b91cb968977068663119812	security-advisories@github.com	N/A
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-65cv-rg9f-qqrx	security-advisories@github.com	N/A

Hyperlink: https://github.com/bigbluebutton/bigbluebutton/commit/691f92f3af0d6b796b91cb968977068663119812

Source: security-advisories@github.com

Resource: N/A

Hyperlink: https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-65cv-rg9f-qqrx

Source: security-advisories@github.com

Resource: N/A

CISA Catalog

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