Bigbluebutton
Source repositories
CVEs (58)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2020-27605 | Cri | 0.64 | 9.8 | 0.01 | Oct 21, 2020 | BigBlueButton through 2.2.28 uses Ghostscript for processing of uploaded EPS documents, and consequently may be subject to attacks related to a "schwache Sandbox." | ||
| CVE-2020-27613 | Hig | 0.55 | 8.4 | 0.00 | Oct 21, 2020 | The installation procedure in BigBlueButton before 2.2.28 (or earlier) uses ClueCon as the FreeSWITCH password, which allows local users to achieve unintended FreeSWITCH access. | ||
| CVE-2020-29043 | Hig | 0.49 | 7.5 | 0.01 | Nov 26, 2020 | An issue was discovered in BigBlueButton through 2.2.29. When at attacker is able to view an account_activations/edit?token= URI, the attacker can create an approved user account associated with an email address that has an arbitrary domain name. | ||
| CVE-2020-27610 | Hig | 0.49 | 7.5 | 0.01 | Oct 21, 2020 | The installation procedure in BigBlueButton before 2.2.28 (or earlier) exposes certain network services to external interfaces, and does not automatically set up a firewall configuration to block external access. | ||
| CVE-2020-27603 | Hig | 0.49 | 7.5 | 0.03 | Oct 21, 2020 | BigBlueButton before 2.2.27 has an unsafe JODConverter setting in which LibreOffice document conversions can access external files. | ||
| CVE-2020-12112 | Hig | 0.49 | 7.5 | 0.05 | Apr 23, 2020 | BigBlueButton before 2.2.5 allows remote attackers to obtain sensitive files via Local File Inclusion. | ||
| CVE-2022-23488 | Med | 0.42 | 6.5 | 0.01 | Dec 17, 2022 | BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are vulnerable to Insertion of Sensitive Information Into Sent Data. The moderators-only webcams lock setting is not enforced on the backend, which allows an attacker to subscribe to viewers'… | ||
| CVE-2020-27607 | Med | 0.42 | 6.5 | 0.01 | Oct 21, 2020 | In BigBlueButton before 2.2.28 (or earlier), the client-side Mute button only signifies that the server should stop accepting audio data from the client. It does not directly configure the client to stop sending audio data to the server, and thus a modified server could store… | ||
| CVE-2020-27604 | Med | 0.42 | 6.5 | 0.01 | Oct 21, 2020 | BigBlueButton before 2.3 does not implement LibreOffice sandboxing. This might make it easier for remote authenticated users to read the API shared secret in the bigbluebutton.properties file. With the API shared secret, an attacker can (for example) use api/join to join an… | ||
| CVE-2020-27608 | Med | 0.40 | 6.1 | 0.01 | Oct 21, 2020 | In BigBlueButton before 2.2.28 (or earlier), uploaded presentations are sent to clients without a Content-Type header, which allows XSS, as demonstrated by a .png file extension for an HTML document. | ||
| CVE-2022-41964 | Med | 0.37 | 5.7 | 0.01 | Dec 16, 2022 | BigBlueButton is an open source web conferencing system. This vulnerability only affects release candidates of BigBlueButton 2.4. The attacker can start a subscription for poll results before starting an anonymous poll, and use this subscription to see individual responses in… | ||
| CVE-2026-27737 | Med | 0.35 | 6.5 | 0.00 | May 18, 2026 | 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… | ||
| CVE-2026-41127 | Med | 0.35 | 6.5 | 0.00 | Apr 22, 2026 | BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have a missing authorization that allows viewers to inject/overwrite captions Version 3.0.24 tightened the permissions on who is able to submit captions. No known workarounds are available. | ||
| CVE-2022-27238 | Med | 0.35 | 5.4 | 0.00 | Jun 24, 2022 | BigBlueButton version 2.4.7 (or earlier) is vulnerable to stored Cross-Site Scripting (XSS) in the private chat functionality. A threat actor could inject JavaScript payload in his/her username. The payload gets executed in the browser of the victim each time the attacker sends… | ||
| CVE-2020-27609 | Med | 0.35 | 5.3 | 0.01 | Oct 21, 2020 | BigBlueButton through 2.2.28 records a video meeting despite the deactivation of video recording in the user interface. This may result in data storage beyond what is authorized for a specific meeting topic or participant. | ||
| CVE-2020-27606 | Med | 0.35 | 5.3 | 0.01 | Oct 21, 2020 | BigBlueButton before 2.2.28 (or earlier) does not set the secure flag for the session cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session. | ||
| CVE-2022-23490 | Med | 0.28 | 4.3 | 0.00 | Dec 16, 2022 | BigBlueButton is an open source web conferencing system. Versions prior to 2.4.0 expose sensitive information to Unauthorized Actors. This issue affects meetings with polls, where the attacker is a meeting participant. Subscribing to the current-poll collection does not update… | ||
| CVE-2022-41961 | Med | 0.28 | 4.3 | 0.00 | Dec 16, 2022 | BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are subject to Ineffective user bans. The attacker could register multiple users, and join the meeting with one of them. When that user is banned, they could still join the meeting with the… | ||
| CVE-2022-41960 | Med | 0.28 | 4.3 | 0.00 | Dec 16, 2022 | BigBlueButton is an open source web conferencing system. Versions prior to 2.4.3, are subject to Insufficient Verification of Data Authenticity, resulting in Denial of Service. An attacker can make a Meteor call to `validateAuthToken` using a victim's userId, meetingId, and an… | ||
| CVE-2020-27612 | Med | 0.28 | 4.3 | 0.01 | Oct 21, 2020 | Greenlight in BigBlueButton through 2.2.28 places usernames in room URLs, which may represent an unintended information leak to users in a room, or an information leak to outsiders if any user publishes a screenshot of a browser window. |
- risk 0.64cvss 9.8epss 0.01
BigBlueButton through 2.2.28 uses Ghostscript for processing of uploaded EPS documents, and consequently may be subject to attacks related to a "schwache Sandbox."
- risk 0.55cvss 8.4epss 0.00
The installation procedure in BigBlueButton before 2.2.28 (or earlier) uses ClueCon as the FreeSWITCH password, which allows local users to achieve unintended FreeSWITCH access.
- risk 0.49cvss 7.5epss 0.01
An issue was discovered in BigBlueButton through 2.2.29. When at attacker is able to view an account_activations/edit?token= URI, the attacker can create an approved user account associated with an email address that has an arbitrary domain name.
- risk 0.49cvss 7.5epss 0.01
The installation procedure in BigBlueButton before 2.2.28 (or earlier) exposes certain network services to external interfaces, and does not automatically set up a firewall configuration to block external access.
- risk 0.49cvss 7.5epss 0.03
BigBlueButton before 2.2.27 has an unsafe JODConverter setting in which LibreOffice document conversions can access external files.
- risk 0.49cvss 7.5epss 0.05
BigBlueButton before 2.2.5 allows remote attackers to obtain sensitive files via Local File Inclusion.
- risk 0.42cvss 6.5epss 0.01
BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are vulnerable to Insertion of Sensitive Information Into Sent Data. The moderators-only webcams lock setting is not enforced on the backend, which allows an attacker to subscribe to viewers'…
- risk 0.42cvss 6.5epss 0.01
In BigBlueButton before 2.2.28 (or earlier), the client-side Mute button only signifies that the server should stop accepting audio data from the client. It does not directly configure the client to stop sending audio data to the server, and thus a modified server could store…
- risk 0.42cvss 6.5epss 0.01
BigBlueButton before 2.3 does not implement LibreOffice sandboxing. This might make it easier for remote authenticated users to read the API shared secret in the bigbluebutton.properties file. With the API shared secret, an attacker can (for example) use api/join to join an…
- risk 0.40cvss 6.1epss 0.01
In BigBlueButton before 2.2.28 (or earlier), uploaded presentations are sent to clients without a Content-Type header, which allows XSS, as demonstrated by a .png file extension for an HTML document.
- risk 0.37cvss 5.7epss 0.01
BigBlueButton is an open source web conferencing system. This vulnerability only affects release candidates of BigBlueButton 2.4. The attacker can start a subscription for poll results before starting an anonymous poll, and use this subscription to see individual responses in…
- risk 0.35cvss 6.5epss 0.00
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…
- risk 0.35cvss 6.5epss 0.00
BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have a missing authorization that allows viewers to inject/overwrite captions Version 3.0.24 tightened the permissions on who is able to submit captions. No known workarounds are available.
- risk 0.35cvss 5.4epss 0.00
BigBlueButton version 2.4.7 (or earlier) is vulnerable to stored Cross-Site Scripting (XSS) in the private chat functionality. A threat actor could inject JavaScript payload in his/her username. The payload gets executed in the browser of the victim each time the attacker sends…
- risk 0.35cvss 5.3epss 0.01
BigBlueButton through 2.2.28 records a video meeting despite the deactivation of video recording in the user interface. This may result in data storage beyond what is authorized for a specific meeting topic or participant.
- risk 0.35cvss 5.3epss 0.01
BigBlueButton before 2.2.28 (or earlier) does not set the secure flag for the session cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session.
- risk 0.28cvss 4.3epss 0.00
BigBlueButton is an open source web conferencing system. Versions prior to 2.4.0 expose sensitive information to Unauthorized Actors. This issue affects meetings with polls, where the attacker is a meeting participant. Subscribing to the current-poll collection does not update…
- risk 0.28cvss 4.3epss 0.00
BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are subject to Ineffective user bans. The attacker could register multiple users, and join the meeting with one of them. When that user is banned, they could still join the meeting with the…
- risk 0.28cvss 4.3epss 0.00
BigBlueButton is an open source web conferencing system. Versions prior to 2.4.3, are subject to Insufficient Verification of Data Authenticity, resulting in Denial of Service. An attacker can make a Meteor call to `validateAuthToken` using a victim's userId, meetingId, and an…
- risk 0.28cvss 4.3epss 0.01
Greenlight in BigBlueButton through 2.2.28 places usernames in room URLs, which may represent an unintended information leak to users in a room, or an information leak to outsiders if any user publishes a screenshot of a browser window.
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