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106 vulnerabilities found for bigbluebutton by bigbluebutton
CVE-2026-41127 (GCVE-0-2026-41127)
Vulnerability from nvd – Published: 2026-04-21 23:24 – Updated: 2026-04-22 13:12
VLAI?
Title
BigBlueButton's missing authorization allows viewer to inject/overwrite captions
Summary
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.
Severity ?
6.5 (Medium)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.24
|
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CVE-2026-41126 (GCVE-0-2026-41126)
Vulnerability from nvd – Published: 2026-04-21 23:22 – Updated: 2026-04-22 14:16
VLAI?
Title
BigBlueButton has Open Redirect through bigbluebutton/api/join via get-parameter "logoutURL"
Summary
BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have an Open Redirect through bigbluebutton/api/join via get-parameter "logoutURL." Version 3.0.24 has adjusted the handling of requests with incorrect checksum so that the default logoutURL is used. No known workarounds are available.
Severity ?
4.3 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.24
|
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CVE-2026-27736 (GCVE-0-2026-27736)
Vulnerability from nvd – Published: 2026-02-25 16:27 – Updated: 2026-02-26 21:33
VLAI?
Title
BigBlueButton has Open Redirect vulnerability in ApiController
Summary
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.
Severity ?
6.1 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
>= 3.0.0, < 3.0.20
|
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CVE-2026-27467 (GCVE-0-2026-27467)
Vulnerability from nvd – Published: 2026-02-21 07:18 – Updated: 2026-02-24 18:49
VLAI?
Title
BigBlueButton: Audio from participants to the server initially unmuted
Summary
BigBlueButton is an open-source virtual classroom. In versions 3.0.19 and below, when first joining a session with the microphone muted, the client sends audio to the server regardless of mute state. Media is discarded at the server side, so it isn't audible to any participants, but this may allow for malicious server operators to access audio data. The behavior is only incorrect between joining the meeting and the first time the user unmutes. This issue has been fixed in version 3.0.20.
Severity ?
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.20
|
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CVE-2026-27466 (GCVE-0-2026-27466)
Vulnerability from nvd – Published: 2026-02-21 07:14 – Updated: 2026-02-24 18:48
VLAI?
Title
BigBlueButton: Exposed ClamAV port enables Denial of Service
Summary
BigBlueButton is an open-source virtual classroom. In versions 3.0.21 and below, the official documentation for "Server Customization" on Support for ClamAV as presentation file scanner contains instructions that leave a BBB server vulnerable for Denial of Service. The flawed command exposes both ports (3310 and 7357) to the internet. A remote attacker can use this to send complex or large documents to clamd and waste server resources, or shutdown the clamd process. The clamd documentation explicitly warns about exposing this port. Enabling ufw (ubuntu firewall) during install does not help, because Docker routes container traffic through the nat table, which is not managed or restricted by ufw. Rules installed by ufw in the filter table have no effect on docker traffic. In addition, the provided example also mounts /var/bigbluebutton with write permissions into the container, which should not be required. Future vulnerabilities in clamd may allow attackers to manipulate files in that folder. Users are unaffected unless they have opted in to follow the extra instructions from BigBlueButton's documentation. This issue has been fixed in version 3.0.22.
Severity ?
7.2 (High)
CWE
- CWE-668 - Exposure of Resource to Wrong Sphere
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.22
|
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}
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CVE-2025-61602 (GCVE-0-2025-61602)
Vulnerability from nvd – Published: 2025-10-09 20:40 – Updated: 2025-10-10 14:30
VLAI?
Title
BigBlueButton vulnerable to Chat DoS via invalid reactionEmojiId
Summary
BigBlueButton is an open-source virtual classroom. A denial-of-service (DoS) vulnerability in versions prior to 3.0.13 allows any authenticated user to crash the chat functionality for all participants in a meeting by sending a malformed `reactionEmojiId` in the GraphQL mutation `chatSendMessageReaction`. Version 3.0.13 contains a patch. No known workarounds are available.
Severity ?
7.5 (High)
CWE
- CWE-703 - Improper Check or Handling of Exceptional Conditions
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.13
|
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CVE-2025-61601 (GCVE-0-2025-61601)
Vulnerability from nvd – Published: 2025-10-09 20:29 – Updated: 2025-10-15 19:47
VLAI?
Title
BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation
Summary
BigBlueButton is an open-source virtual classroom. A Denial of Service (DoS) vulnerability in versions prior to 3.0.13 allows any authenticated user to freeze or crash the entire server by abusing the polling feature's `Choices` response type. By submitting a malicious payload with a massive array in the `answerIds` field, the attacker can cause the current meeting — and potentially all meetings on the server — to become unresponsive. Version 3.0.13 contains a patch. No known workarounds are available.
Severity ?
7.5 (High)
CWE
- CWE-703 - Improper Check or Handling of Exceptional Conditions
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.13
|
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CVE-2025-55200 (GCVE-0-2025-55200)
Vulnerability from nvd – Published: 2025-10-09 18:51 – Updated: 2025-10-09 19:08
VLAI?
Title
BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes
Summary
BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.13, the "Shared Notes" feature contains a Stored Cross-Site Scripting (XSS) vulnerability with the input location being the "Username" field and the output location on the "Shared Notes" page, when a user with a malicious username is editing content. This vulnerability allows a low-privileged user to execute arbitrary JavaScript in the context of higher-privileged users (e.g., Admins) who open the Shared Notes page. Version 3.0.13 fixes the issue.
Severity ?
7.1 (High)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.13
|
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CVE-2024-39302 (GCVE-0-2024-39302)
Vulnerability from nvd – Published: 2024-06-28 20:51 – Updated: 2024-08-02 04:19
VLAI?
Title
Some bbb-record-core files installed with wrong file permission
Summary
BigBlueButton is an open-source virtual classroom designed to help teachers teach and learners learn. An attacker may be able to exploit the overly elevated file permissions in the `/usr/local/bigbluebutton/core/vendor/bundle/ruby/2.7.0/gems/resque-2.6.0` directory with the goal of privilege escalation, potentially exposing sensitive information on the server. This issue has been patched in version(s) 2.6.18, 2.7.8 and 3.0.0-alpha.7.
Severity ?
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.18
Affected: >= 2.7.0, < 2.7.8 Affected: >= 2.8.0, < 3.0.0-alpha.7 |
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"vendor": "bigbluebutton",
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CVE-2024-38518 (GCVE-0-2024-38518)
Vulnerability from nvd – Published: 2024-06-28 20:25 – Updated: 2024-08-02 04:12
VLAI?
Title
bbb-web API additional parameters considered
Summary
BigBlueButton is an open-source virtual classroom designed to help teachers teach and learners learn. An attacker with a valid join link to a meeting can trick BigBlueButton into generating a signed join link with additional parameters. One of those parameters may be "role=moderator", allowing an attacker to join a meeting as moderator using a join link that was originally created for viewer access. This vulnerability has been patched in version(s) 2.6.18, 2.7.8 and 3.0.0-alpha.7.
Severity ?
4.6 (Medium)
CWE
- CWE-284 - Improper Access Control
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.18
Affected: >= 2.7.0, < 2.7.8 Affected: >= 2.8.0, < 3.0.0-alpha.7 |
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CVE-2023-43798 (GCVE-0-2023-43798)
Vulnerability from nvd – Published: 2023-10-30 22:24 – Updated: 2024-09-05 20:19
VLAI?
Title
BigBlueButton Blind SSRF When Uploading Presentation (mitigation bypass)
Summary
BigBlueButton is an open-source virtual classroom. BigBlueButton prior to versions 2.6.12 and 2.7.0-rc.1 is vulnerable to Server-Side Request Forgery (SSRF). This issue is a bypass of CVE-2023-33176. A patch in versions 2.6.12 and 2.7.0-rc.1 disabled follow redirect at `httpclient.execute` since the software no longer has to follow it when using `finalUrl`. There are no known workarounds. We recommend upgrading to a patched version of BigBlueButton.
Severity ?
5.6 (Medium)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.12
Affected: >= 2.7.0-alpha.1, < 2.7.0-rc.1 |
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CVE-2023-43797 (GCVE-0-2023-43797)
Vulnerability from nvd – Published: 2023-10-30 22:18 – Updated: 2024-09-05 20:20
VLAI?
Title
BigBlueButton Stored Cross-site Scripting vulnerability at Guest Lobby
Summary
BigBlueButton is an open-source virtual classroom. Prior to versions 2.6.11 and 2.7.0-beta.3, Guest Lobby was vulnerable to cross-site scripting when users wait to enter the meeting due to inserting unsanitized messages to the element using unsafe innerHTML. Text sanitizing was added for lobby messages starting in versions 2.6.11 and 2.7.0-beta.3. There are no known workarounds.
Severity ?
6.3 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.11
Affected: >= 2.7.0-alpha.1, < 2.7.0-beta.3 |
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CVE-2023-42804 (GCVE-0-2023-42804)
Vulnerability from nvd – Published: 2023-10-30 18:14 – Updated: 2024-09-05 20:23
VLAI?
Title
BigBlueButton Path Traversal – Reading Certain File Extensions
Summary
BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.1 has a path traversal vulnerability that allows an attacker with a valid starting folder path, to traverse and read other files without authentication, assuming the files have certain extensions (txt, swf, svg, png). In version 2.6.0-beta.1, input validation was added on the parameters being passed and dangerous characters are stripped. There are no known workarounds.
Severity ?
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.0-beta.1
|
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CVE-2023-42803 (GCVE-0-2023-42803)
Vulnerability from nvd – Published: 2023-10-30 18:11 – Updated: 2024-09-06 20:12
VLAI?
Title
BigBlueButton Unrestricted File Upload vulnerability
Summary
BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.2 is vulnerable to unrestricted file upload, where the insertDocument API call does not validate the given file extension before saving the file, and does not remove it in case of validation failures. BigBlueButton 2.6.0-beta.2 contains a patch. There are no known workarounds.
Severity ?
5.3 (Medium)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.0-beta.2
|
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CVE-2023-33176 (GCVE-0-2023-33176)
Vulnerability from nvd – Published: 2023-06-26 19:50 – Updated: 2024-11-12 15:18
VLAI?
Title
Blind SSRF When Uploading Presentation in BigBlueButton
Summary
BigBlueButton is an open source virtual classroom designed to help teachers teach and learners learn. In affected versions are affected by a Server-Side Request Forgery (SSRF) vulnerability. In an `insertDocument` API request the user is able to supply a URL from which the presentation should be downloaded. This URL was being used without having been successfully validated first. An update to the `followRedirect` method in the `PresentationUrlDownloadService` has been made to validate all URLs to be used for presentation download. Two new properties `presentationDownloadSupportedProtocols` and `presentationDownloadBlockedHosts` have also been added to `bigbluebutton.properties` to allow administrators to define what protocols a URL must use and to explicitly define hosts that a presentation cannot be downloaded from. All URLs passed to `insertDocument` must conform to the requirements of the two previously mentioned properties. Additionally, these URLs must resolve to valid addresses, and these addresses must not be local or loopback addresses. There are no workarounds. Users are advised to upgrade to a patched version of BigBlueButton.
Severity ?
4.8 (Medium)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
>= 2.6.0, < 2.6.9
Affected: < 2.5.18 |
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CVE-2026-41127 (GCVE-0-2026-41127)
Vulnerability from cvelistv5 – Published: 2026-04-21 23:24 – Updated: 2026-04-22 13:12
VLAI?
Title
BigBlueButton's missing authorization allows viewer to inject/overwrite captions
Summary
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.
Severity ?
6.5 (Medium)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.24
|
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CVE-2026-41126 (GCVE-0-2026-41126)
Vulnerability from cvelistv5 – Published: 2026-04-21 23:22 – Updated: 2026-04-22 14:16
VLAI?
Title
BigBlueButton has Open Redirect through bigbluebutton/api/join via get-parameter "logoutURL"
Summary
BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have an Open Redirect through bigbluebutton/api/join via get-parameter "logoutURL." Version 3.0.24 has adjusted the handling of requests with incorrect checksum so that the default logoutURL is used. No known workarounds are available.
Severity ?
4.3 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.24
|
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CVE-2026-27736 (GCVE-0-2026-27736)
Vulnerability from cvelistv5 – Published: 2026-02-25 16:27 – Updated: 2026-02-26 21:33
VLAI?
Title
BigBlueButton has Open Redirect vulnerability in ApiController
Summary
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.
Severity ?
6.1 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
>= 3.0.0, < 3.0.20
|
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CVE-2026-27467 (GCVE-0-2026-27467)
Vulnerability from cvelistv5 – Published: 2026-02-21 07:18 – Updated: 2026-02-24 18:49
VLAI?
Title
BigBlueButton: Audio from participants to the server initially unmuted
Summary
BigBlueButton is an open-source virtual classroom. In versions 3.0.19 and below, when first joining a session with the microphone muted, the client sends audio to the server regardless of mute state. Media is discarded at the server side, so it isn't audible to any participants, but this may allow for malicious server operators to access audio data. The behavior is only incorrect between joining the meeting and the first time the user unmutes. This issue has been fixed in version 3.0.20.
Severity ?
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.20
|
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CVE-2026-27466 (GCVE-0-2026-27466)
Vulnerability from cvelistv5 – Published: 2026-02-21 07:14 – Updated: 2026-02-24 18:48
VLAI?
Title
BigBlueButton: Exposed ClamAV port enables Denial of Service
Summary
BigBlueButton is an open-source virtual classroom. In versions 3.0.21 and below, the official documentation for "Server Customization" on Support for ClamAV as presentation file scanner contains instructions that leave a BBB server vulnerable for Denial of Service. The flawed command exposes both ports (3310 and 7357) to the internet. A remote attacker can use this to send complex or large documents to clamd and waste server resources, or shutdown the clamd process. The clamd documentation explicitly warns about exposing this port. Enabling ufw (ubuntu firewall) during install does not help, because Docker routes container traffic through the nat table, which is not managed or restricted by ufw. Rules installed by ufw in the filter table have no effect on docker traffic. In addition, the provided example also mounts /var/bigbluebutton with write permissions into the container, which should not be required. Future vulnerabilities in clamd may allow attackers to manipulate files in that folder. Users are unaffected unless they have opted in to follow the extra instructions from BigBlueButton's documentation. This issue has been fixed in version 3.0.22.
Severity ?
7.2 (High)
CWE
- CWE-668 - Exposure of Resource to Wrong Sphere
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.22
|
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CVE-2025-61602 (GCVE-0-2025-61602)
Vulnerability from cvelistv5 – Published: 2025-10-09 20:40 – Updated: 2025-10-10 14:30
VLAI?
Title
BigBlueButton vulnerable to Chat DoS via invalid reactionEmojiId
Summary
BigBlueButton is an open-source virtual classroom. A denial-of-service (DoS) vulnerability in versions prior to 3.0.13 allows any authenticated user to crash the chat functionality for all participants in a meeting by sending a malformed `reactionEmojiId` in the GraphQL mutation `chatSendMessageReaction`. Version 3.0.13 contains a patch. No known workarounds are available.
Severity ?
7.5 (High)
CWE
- CWE-703 - Improper Check or Handling of Exceptional Conditions
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.13
|
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CVE-2025-61601 (GCVE-0-2025-61601)
Vulnerability from cvelistv5 – Published: 2025-10-09 20:29 – Updated: 2025-10-15 19:47
VLAI?
Title
BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation
Summary
BigBlueButton is an open-source virtual classroom. A Denial of Service (DoS) vulnerability in versions prior to 3.0.13 allows any authenticated user to freeze or crash the entire server by abusing the polling feature's `Choices` response type. By submitting a malicious payload with a massive array in the `answerIds` field, the attacker can cause the current meeting — and potentially all meetings on the server — to become unresponsive. Version 3.0.13 contains a patch. No known workarounds are available.
Severity ?
7.5 (High)
CWE
- CWE-703 - Improper Check or Handling of Exceptional Conditions
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.13
|
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CVE-2025-55200 (GCVE-0-2025-55200)
Vulnerability from cvelistv5 – Published: 2025-10-09 18:51 – Updated: 2025-10-09 19:08
VLAI?
Title
BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes
Summary
BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.13, the "Shared Notes" feature contains a Stored Cross-Site Scripting (XSS) vulnerability with the input location being the "Username" field and the output location on the "Shared Notes" page, when a user with a malicious username is editing content. This vulnerability allows a low-privileged user to execute arbitrary JavaScript in the context of higher-privileged users (e.g., Admins) who open the Shared Notes page. Version 3.0.13 fixes the issue.
Severity ?
7.1 (High)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 3.0.13
|
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CVE-2024-39302 (GCVE-0-2024-39302)
Vulnerability from cvelistv5 – Published: 2024-06-28 20:51 – Updated: 2024-08-02 04:19
VLAI?
Title
Some bbb-record-core files installed with wrong file permission
Summary
BigBlueButton is an open-source virtual classroom designed to help teachers teach and learners learn. An attacker may be able to exploit the overly elevated file permissions in the `/usr/local/bigbluebutton/core/vendor/bundle/ruby/2.7.0/gems/resque-2.6.0` directory with the goal of privilege escalation, potentially exposing sensitive information on the server. This issue has been patched in version(s) 2.6.18, 2.7.8 and 3.0.0-alpha.7.
Severity ?
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.18
Affected: >= 2.7.0, < 2.7.8 Affected: >= 2.8.0, < 3.0.0-alpha.7 |
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CVE-2024-38518 (GCVE-0-2024-38518)
Vulnerability from cvelistv5 – Published: 2024-06-28 20:25 – Updated: 2024-08-02 04:12
VLAI?
Title
bbb-web API additional parameters considered
Summary
BigBlueButton is an open-source virtual classroom designed to help teachers teach and learners learn. An attacker with a valid join link to a meeting can trick BigBlueButton into generating a signed join link with additional parameters. One of those parameters may be "role=moderator", allowing an attacker to join a meeting as moderator using a join link that was originally created for viewer access. This vulnerability has been patched in version(s) 2.6.18, 2.7.8 and 3.0.0-alpha.7.
Severity ?
4.6 (Medium)
CWE
- CWE-284 - Improper Access Control
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.18
Affected: >= 2.7.0, < 2.7.8 Affected: >= 2.8.0, < 3.0.0-alpha.7 |
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CVE-2023-43798 (GCVE-0-2023-43798)
Vulnerability from cvelistv5 – Published: 2023-10-30 22:24 – Updated: 2024-09-05 20:19
VLAI?
Title
BigBlueButton Blind SSRF When Uploading Presentation (mitigation bypass)
Summary
BigBlueButton is an open-source virtual classroom. BigBlueButton prior to versions 2.6.12 and 2.7.0-rc.1 is vulnerable to Server-Side Request Forgery (SSRF). This issue is a bypass of CVE-2023-33176. A patch in versions 2.6.12 and 2.7.0-rc.1 disabled follow redirect at `httpclient.execute` since the software no longer has to follow it when using `finalUrl`. There are no known workarounds. We recommend upgrading to a patched version of BigBlueButton.
Severity ?
5.6 (Medium)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.12
Affected: >= 2.7.0-alpha.1, < 2.7.0-rc.1 |
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CVE-2023-43797 (GCVE-0-2023-43797)
Vulnerability from cvelistv5 – Published: 2023-10-30 22:18 – Updated: 2024-09-05 20:20
VLAI?
Title
BigBlueButton Stored Cross-site Scripting vulnerability at Guest Lobby
Summary
BigBlueButton is an open-source virtual classroom. Prior to versions 2.6.11 and 2.7.0-beta.3, Guest Lobby was vulnerable to cross-site scripting when users wait to enter the meeting due to inserting unsanitized messages to the element using unsafe innerHTML. Text sanitizing was added for lobby messages starting in versions 2.6.11 and 2.7.0-beta.3. There are no known workarounds.
Severity ?
6.3 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.11
Affected: >= 2.7.0-alpha.1, < 2.7.0-beta.3 |
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CVE-2023-42804 (GCVE-0-2023-42804)
Vulnerability from cvelistv5 – Published: 2023-10-30 18:14 – Updated: 2024-09-05 20:23
VLAI?
Title
BigBlueButton Path Traversal – Reading Certain File Extensions
Summary
BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.1 has a path traversal vulnerability that allows an attacker with a valid starting folder path, to traverse and read other files without authentication, assuming the files have certain extensions (txt, swf, svg, png). In version 2.6.0-beta.1, input validation was added on the parameters being passed and dangerous characters are stripped. There are no known workarounds.
Severity ?
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.0-beta.1
|
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CVE-2023-42803 (GCVE-0-2023-42803)
Vulnerability from cvelistv5 – Published: 2023-10-30 18:11 – Updated: 2024-09-06 20:12
VLAI?
Title
BigBlueButton Unrestricted File Upload vulnerability
Summary
BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.2 is vulnerable to unrestricted file upload, where the insertDocument API call does not validate the given file extension before saving the file, and does not remove it in case of validation failures. BigBlueButton 2.6.0-beta.2 contains a patch. There are no known workarounds.
Severity ?
5.3 (Medium)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.0-beta.2
|
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CVE-2023-33176 (GCVE-0-2023-33176)
Vulnerability from cvelistv5 – Published: 2023-06-26 19:50 – Updated: 2024-11-12 15:18
VLAI?
Title
Blind SSRF When Uploading Presentation in BigBlueButton
Summary
BigBlueButton is an open source virtual classroom designed to help teachers teach and learners learn. In affected versions are affected by a Server-Side Request Forgery (SSRF) vulnerability. In an `insertDocument` API request the user is able to supply a URL from which the presentation should be downloaded. This URL was being used without having been successfully validated first. An update to the `followRedirect` method in the `PresentationUrlDownloadService` has been made to validate all URLs to be used for presentation download. Two new properties `presentationDownloadSupportedProtocols` and `presentationDownloadBlockedHosts` have also been added to `bigbluebutton.properties` to allow administrators to define what protocols a URL must use and to explicitly define hosts that a presentation cannot be downloaded from. All URLs passed to `insertDocument` must conform to the requirements of the two previously mentioned properties. Additionally, these URLs must resolve to valid addresses, and these addresses must not be local or loopback addresses. There are no workarounds. Users are advised to upgrade to a patched version of BigBlueButton.
Severity ?
4.8 (Medium)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
>= 2.6.0, < 2.6.9
Affected: < 2.5.18 |
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