CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-27467

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.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.0

EPSS Ranking 6.7%

CVSS Severity

CVSS v3 Score 2.0

References

Products affected by CVE-2026-27467

Bigbluebutton » Bigbluebutton » Version: N/A

cpe:2.3:a:bigbluebutton:bigbluebutton:-
Bigbluebutton » Bigbluebutton » Version: 0.7

cpe:2.3:a:bigbluebutton:bigbluebutton:0.7
Bigbluebutton » Bigbluebutton » Version: 0.71

cpe:2.3:a:bigbluebutton:bigbluebutton:0.71
Bigbluebutton » Bigbluebutton » Version: 0.8

cpe:2.3:a:bigbluebutton:bigbluebutton:0.8
Bigbluebutton » Bigbluebutton » Version: 0.81

cpe:2.3:a:bigbluebutton:bigbluebutton:0.81
Bigbluebutton » Bigbluebutton » Version: 0.9.0

cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.0
Bigbluebutton » Bigbluebutton » Version: 0.9.1

cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.1
Bigbluebutton » Bigbluebutton » Version: 0.9.2

cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.2
Bigbluebutton » Bigbluebutton » Version: 1.0.0

cpe:2.3:a:bigbluebutton:bigbluebutton:1.0.0
Bigbluebutton » Bigbluebutton » Version: 1.1.0

cpe:2.3:a:bigbluebutton:bigbluebutton:1.1.0
Bigbluebutton » Bigbluebutton » Version: 2.0

cpe:2.3:a:bigbluebutton:bigbluebutton:2.0
Bigbluebutton » Bigbluebutton » Version: 2.2.0

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0
Bigbluebutton » Bigbluebutton » Version: 2.2.1

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.1
Bigbluebutton » Bigbluebutton » Version: 2.2.10

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.10
Bigbluebutton » Bigbluebutton » Version: 2.2.11

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.11
Bigbluebutton » Bigbluebutton » Version: 2.2.12

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.12
Bigbluebutton » Bigbluebutton » Version: 2.2.14

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.14
Bigbluebutton » Bigbluebutton » Version: 2.2.15

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.15
Bigbluebutton » Bigbluebutton » Version: 2.2.16

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.16
Bigbluebutton » Bigbluebutton » Version: 2.2.17

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.17
Bigbluebutton » Bigbluebutton » Version: 2.2.18

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.18
Bigbluebutton » Bigbluebutton » Version: 2.2.19

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.19
Bigbluebutton » Bigbluebutton » Version: 2.2.2

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.2
Bigbluebutton » Bigbluebutton » Version: 2.2.20

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.20
Bigbluebutton » Bigbluebutton » Version: 2.2.21

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.21
Bigbluebutton » Bigbluebutton » Version: 2.2.22

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.22
Bigbluebutton » Bigbluebutton » Version: 2.2.23

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.23
Bigbluebutton » Bigbluebutton » Version: 2.2.24

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.24
Bigbluebutton » Bigbluebutton » Version: 2.2.25

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.25
Bigbluebutton » Bigbluebutton » Version: 2.2.26

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.26
Bigbluebutton » Bigbluebutton » Version: 2.2.27

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.27
Bigbluebutton » Bigbluebutton » Version: 2.2.28

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.28
Bigbluebutton » Bigbluebutton » Version: 2.2.29

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.29
Bigbluebutton » Bigbluebutton » Version: 2.2.3

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.3
Bigbluebutton » Bigbluebutton » Version: 2.2.30

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.30
Bigbluebutton » Bigbluebutton » Version: 2.2.31

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.31
Bigbluebutton » Bigbluebutton » Version: 2.2.4

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.4
Bigbluebutton » Bigbluebutton » Version: 2.2.5

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.5
Bigbluebutton » Bigbluebutton » Version: 2.2.6

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.6
Bigbluebutton » Bigbluebutton » Version: 2.2.7

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.7
Bigbluebutton » Bigbluebutton » Version: 2.2.8

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.8
Bigbluebutton » Bigbluebutton » Version: 2.2.9

cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.9
Bigbluebutton » Bigbluebutton » Version: 2.3

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3
Bigbluebutton » Bigbluebutton » Version: 2.3.0

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.0
Bigbluebutton » Bigbluebutton » Version: 2.3.1

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.1
Bigbluebutton » Bigbluebutton » Version: 2.3.10

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.10
Bigbluebutton » Bigbluebutton » Version: 2.3.11

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.11
Bigbluebutton » Bigbluebutton » Version: 2.3.12

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.12
Bigbluebutton » Bigbluebutton » Version: 2.3.13

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.13
Bigbluebutton » Bigbluebutton » Version: 2.3.14

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.14
Bigbluebutton » Bigbluebutton » Version: 2.3.15

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.15
Bigbluebutton » Bigbluebutton » Version: 2.3.16

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.16
Bigbluebutton » Bigbluebutton » Version: 2.3.17

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.17
Bigbluebutton » Bigbluebutton » Version: 2.3.2

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.2
Bigbluebutton » Bigbluebutton » Version: 2.3.3

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.3
Bigbluebutton » Bigbluebutton » Version: 2.3.4

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.4
Bigbluebutton » Bigbluebutton » Version: 2.3.5

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.5
Bigbluebutton » Bigbluebutton » Version: 2.3.6

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.6
Bigbluebutton » Bigbluebutton » Version: 2.3.7

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.7
Bigbluebutton » Bigbluebutton » Version: 2.3.8

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.8
Bigbluebutton » Bigbluebutton » Version: 2.3.9

cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.9
Bigbluebutton » Bigbluebutton » Version: 2.4

cpe:2.3:a:bigbluebutton:bigbluebutton:2.4
Bigbluebutton » Bigbluebutton » Version: 2.4.0

cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.0
Bigbluebutton » Bigbluebutton » Version: 2.4.1

cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.1
Bigbluebutton » Bigbluebutton » Version: 2.4.2

cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.2
Bigbluebutton » Bigbluebutton » Version: 2.4.3

cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.3
Bigbluebutton » Bigbluebutton » Version: 2.4.4

cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.4
Bigbluebutton » Bigbluebutton » Version: 2.4.5

cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.5
Bigbluebutton » Bigbluebutton » Version: 2.4.6

cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.6
Bigbluebutton » Bigbluebutton » Version: 2.4.7

cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.7
Bigbluebutton » Bigbluebutton » Version: 2.4.9

cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.9
Bigbluebutton » Bigbluebutton » Version: 2.5

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5
Bigbluebutton » Bigbluebutton » Version: 2.5.1

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.1
Bigbluebutton » Bigbluebutton » Version: 2.5.10

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.10
Bigbluebutton » Bigbluebutton » Version: 2.5.11

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.11
Bigbluebutton » Bigbluebutton » Version: 2.5.12

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.12
Bigbluebutton » Bigbluebutton » Version: 2.5.14

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.14
Bigbluebutton » Bigbluebutton » Version: 2.5.15

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.15
Bigbluebutton » Bigbluebutton » Version: 2.5.16

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.16
Bigbluebutton » Bigbluebutton » Version: 2.5.17

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.17
Bigbluebutton » Bigbluebutton » Version: 2.5.18

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.18
Bigbluebutton » Bigbluebutton » Version: 2.5.2

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.2
Bigbluebutton » Bigbluebutton » Version: 2.5.3

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.3
Bigbluebutton » Bigbluebutton » Version: 2.5.4

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.4
Bigbluebutton » Bigbluebutton » Version: 2.5.5

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.5
Bigbluebutton » Bigbluebutton » Version: 2.5.6

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.6
Bigbluebutton » Bigbluebutton » Version: 2.5.7

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.7
Bigbluebutton » Bigbluebutton » Version: 2.5.8

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.8
Bigbluebutton » Bigbluebutton » Version: 2.5.9

cpe:2.3:a:bigbluebutton:bigbluebutton:2.5.9
Bigbluebutton » Bigbluebutton » Version: 2.6.0

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.0
Bigbluebutton » Bigbluebutton » Version: 2.6.1

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.1
Bigbluebutton » Bigbluebutton » Version: 2.6.10

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.10
Bigbluebutton » Bigbluebutton » Version: 2.6.11

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.11
Bigbluebutton » Bigbluebutton » Version: 2.6.12

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.12
Bigbluebutton » Bigbluebutton » Version: 2.6.14

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.14
Bigbluebutton » Bigbluebutton » Version: 2.6.15

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.15
Bigbluebutton » Bigbluebutton » Version: 2.6.16

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.16
Bigbluebutton » Bigbluebutton » Version: 2.6.17

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.17
Bigbluebutton » Bigbluebutton » Version: 2.6.18

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.18
Bigbluebutton » Bigbluebutton » Version: 2.6.2

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.2
Bigbluebutton » Bigbluebutton » Version: 2.6.3

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.3
Bigbluebutton » Bigbluebutton » Version: 2.6.4

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.4
Bigbluebutton » Bigbluebutton » Version: 2.6.5

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.5
Bigbluebutton » Bigbluebutton » Version: 2.6.6

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.6
Bigbluebutton » Bigbluebutton » Version: 2.6.7

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.7
Bigbluebutton » Bigbluebutton » Version: 2.6.8

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.8
Bigbluebutton » Bigbluebutton » Version: 2.6.9

cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.9
Bigbluebutton » Bigbluebutton » Version: 2.7.0

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.0
Bigbluebutton » Bigbluebutton » Version: 2.7.1

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.1
Bigbluebutton » Bigbluebutton » Version: 2.7.10

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.10
Bigbluebutton » Bigbluebutton » Version: 2.7.11

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.11
Bigbluebutton » Bigbluebutton » Version: 2.7.12

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.12
Bigbluebutton » Bigbluebutton » Version: 2.7.13

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.13
Bigbluebutton » Bigbluebutton » Version: 2.7.14

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.14
Bigbluebutton » Bigbluebutton » Version: 2.7.15

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.15
Bigbluebutton » Bigbluebutton » Version: 2.7.16

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.16
Bigbluebutton » Bigbluebutton » Version: 2.7.2

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.2
Bigbluebutton » Bigbluebutton » Version: 2.7.3

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.3
Bigbluebutton » Bigbluebutton » Version: 2.7.4

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.4
Bigbluebutton » Bigbluebutton » Version: 2.7.5

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.5
Bigbluebutton » Bigbluebutton » Version: 2.7.6

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.6
Bigbluebutton » Bigbluebutton » Version: 2.7.7

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.7
Bigbluebutton » Bigbluebutton » Version: 2.7.8

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.8
Bigbluebutton » Bigbluebutton » Version: 2.7.9

cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.9
Bigbluebutton » Bigbluebutton » Version: 3.0.0

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.0
Bigbluebutton » Bigbluebutton » Version: 3.0.1

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.1
Bigbluebutton » Bigbluebutton » Version: 3.0.10

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.10
Bigbluebutton » Bigbluebutton » Version: 3.0.11

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.11
Bigbluebutton » Bigbluebutton » Version: 3.0.12

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.12
Bigbluebutton » Bigbluebutton » Version: 3.0.13

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.13
Bigbluebutton » Bigbluebutton » Version: 3.0.14

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.14
Bigbluebutton » Bigbluebutton » Version: 3.0.15

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.15
Bigbluebutton » Bigbluebutton » Version: 3.0.16

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.16
Bigbluebutton » Bigbluebutton » Version: 3.0.2

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.2
Bigbluebutton » Bigbluebutton » Version: 3.0.3

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.3
Bigbluebutton » Bigbluebutton » Version: 3.0.4

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.4
Bigbluebutton » Bigbluebutton » Version: 3.0.5

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.5
Bigbluebutton » Bigbluebutton » Version: 3.0.6

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.6
Bigbluebutton » Bigbluebutton » Version: 3.0.7

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.7
Bigbluebutton » Bigbluebutton » Version: 3.0.8

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.8
Bigbluebutton » Bigbluebutton » Version: 3.0.9

cpe:2.3:a:bigbluebutton:bigbluebutton:3.0.9

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Vulnerable Software

Vulnerability Details CVE-2026-27467

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