CVE-2026-27737

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Source
https://cve.org/CVERecord?id=CVE-2026-27737
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27737.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-27737
Aliases
  • GHSA-8vv7-vj94-q2pv
Published
2026-05-18T21:11:17Z
Modified
2026-10-21T02:56:35Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
BigBlueButton has Stored XSS in bbb-playback replay
Details

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 replaying the recording. This issue has been fixed 3.0.19.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27737.json"
}
References

Affected packages

Git / github.com/bigbluebutton/bbb-playback

Affected ranges

Type
GIT
Repo
https://github.com/bigbluebutton/bbb-playback
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
317cae1e83dcde3f5057d0af71890e42b51bd3ff
Fixed
09e89bfe4ff8488b68c3ff040d3081e419dc89b1
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "5.4.3"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "09e89bfe4ff8488b68c3ff040d3081e419dc89b1"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}
Type
GIT
Repo
https://github.com/bigbluebutton/bigbluebutton
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
69f45aa1b963dc7d80179d0155acc670aec5c4fc
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "3.0.19"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "69f45aa1b963dc7d80179d0155acc670aec5c4fc"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v3.0.19",
            "range":  [
                {
                    "fixed":  "69f45aa1b963dc7d80179d0155acc670aec5c4fc"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "3.0.19"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}
Type
GIT
Repo
https://github.com/blindsidenetworks/scalelite
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
832fda8eff87d8c2a17c3943e347afc8504c3897
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.7.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "original_tag":  "v1.7.0",
            "range":  [
                {
                    "fixed":  "832fda8eff87d8c2a17c3943e347afc8504c3897"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

1.*
1.3.4-beta.1.2
2.*
2.2-beta-10
2.2-beta-11
2.2-beta-12
2.2-beta-14
2.2-beta-15
2.2-beta-16
2.2-beta-17
2.2-beta-18
2.2-beta-19
2.2-beta-2
2.2-beta-20
2.2-beta-21
2.2-beta-22
2.2-beta-23
2.2-beta-3
2.2-beta-4
2.2-beta-5
2.2-beta-6
2.2-beta-7
2.2-beta-8
2.2-beta-9
2.2-rc-1
2.2-rc-2
2.2-rc-3
3.*
3.0.0-rc.1
Other
dcs-2-a
v.*
v.1.4.0
v0.*
v0.1-alpha.1
v0.1-alpha.1.1
v0.1-alpha.2
v0.1-alpha.3
v0.1-alpha.4
v0.8
v0.8b4
v0.8b4.0
v0.8rc2
v0.9.0-beta
v1.*
v1.0
v1.0.1
v1.0.10
v1.0.11
v1.0.12
v1.0.2
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.7
v1.0.8
v1.0.9
v1.1
v1.1-beta.1
v1.1-beta.2
v1.1-beta.3
v1.1-beta.4
v1.1-rc.1
v1.1.1
v1.1.1.0
v1.1.2
v1.1.3
v1.1.4
v1.1.5
v1.1.5-beta.1
v1.1.5.1
v1.1.6
v1.1.6-beta.1
v1.1.7
v1.1.7-beta.1
v1.1.7.1
v1.1.7.1-beta.1
v1.1.7.1-beta.2
v1.2
v1.2-beta.1
v1.2-beta.2
v1.2-beta.3
v1.3
v1.3-beta.1
v1.3-beta.2
v1.3-beta.3
v1.3.1
v1.3.1-beta.1
v1.3.1-beta.2
v1.3.1-beta.3
v1.3.2.1
v1.3.2.1-beta.1
v1.3.3
v1.3.3-beta.1
v1.3.3-beta.2
v1.3.3.1
v1.3.4
v1.3.4-beta.1
v1.3.4-beta.1.1
v1.3.5
v1.3.5-beta.1
v1.3.5-beta.2
v1.3.5.1
v1.3.5.1-beta.1
v1.3.5.2
v1.3.5.2-beta.1
v1.4
v1.4-beta.1
v1.4.1
v1.4.1-beta.2
v1.4.2
v1.4.2-beta.1
v1.4.2-beta.2
v1.5.0
v1.5.0-beta.1
v1.5.1
v1.5.1-beta.1
v1.5.1.1
v1.5.1.2
v1.5.1.3
v1.5.1.4
v1.5.1.5
v1.5.1.6
v1.5.1.7
v1.5.1.7-beta.1
v1.5.2-alpha.1
v1.5.2-beta.1
v1.6.0
v1.6.0-alpha.1
v1.6.1
v1.6.10
v1.6.11
v1.6.11-alpha
v1.6.12
v1.6.12.1
v1.6.2
v1.6.3
v1.6.4
v1.6.4-alpha
v1.6.5
v1.6.5-alpha
v1.6.6
v1.6.6-alpha
v1.6.7
v1.6.8
v1.6.9
v2.*
v2.3-alpha-1
v2.3-alpha-2
v2.3-alpha-3
v2.3-alpha-4
v2.3-alpha-5
v2.3-alpha-6
v2.3-alpha-7
v2.3-alpha-8
v2.3-beta-1
v2.3-beta-2
v2.3-beta-3
v2.3-beta-4
v2.3-beta-5
v2.3-rc-1
v2.3-rc-2
v2.3.0
v2.3.1
v2.3.2
v2.4-alpha-1
v2.4-beta-1
v2.4-beta-2
v2.4-beta-3
v2.4-beta-4
v3.*
v3.0.0
v3.0.0-alpha.1
v3.0.0-alpha.2
v3.0.0-alpha.3
v3.0.0-alpha.4
v3.0.0-alpha.6
v3.0.0-alpha.7
v3.0.0-beta.1
v3.0.0-beta.2
v3.0.0-beta.3
v3.0.0-beta.4
v3.0.0-beta.5
v3.0.0-beta.6
v3.0.0-beta.7
v3.0.0-rc.1
v3.0.0-rc.2
v3.0.0-rc.3
v3.0.0-rc.4
v3.0.1
v3.0.10
v3.0.11
v3.0.12
v3.0.13
v3.0.14
v3.0.15
v3.0.16
v3.0.17
v3.0.18
v3.0.2
v3.0.3
v3.0.4
v3.0.5
v3.0.7
v3.0.8
v3.0.9
v5.*
v5.0.0-alpha.1
v5.0.0-alpha.2
v5.0.0-alpha.3
v5.0.0-beta.1
v5.0.0-beta.2
v5.0.0-rc.1
v5.0.0-rc.2
v5.0.0-rc.3
v5.0.1
v5.0.2
v5.1.0
v5.1.1
v5.1.2
v5.1.3
v5.2.0
v5.2.1
v5.3.0
v5.3.1
v5.3.2
v5.3.3
v5.3.4
v5.3.5
v5.4.0
v5.4.1
v5.4.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27737.json"