High
BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-55200
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 23:06 UTC · Revision 1
Source evidence
BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes
core-osv · Original sourcePublished 9 Oct 2025, 18:51 UTC
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.
osv:CVE-2025-55200
Complete source record
{
"id": "6e23ff2e5339d92332e766e6cddf1a6d044df18d9c217e0d8c280ca3622a6c0e",
"url": "https://osv.dev/vulnerability/CVE-2025-55200",
"method": "structured",
"payload": {
"kind": "advisory",
"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.",
"evidence": "osv:CVE-2025-55200",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2025-55200",
"aliases": [
"CVE-2025-55200",
"GHSA-9jv9-cjrm-grj2"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/bigbluebutton/bbb-pads",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "611795205c55e0a034d0d438efe7802a76aaee7f"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"fixed": "611795205c55e0a034d0d438efe7802a76aaee7f"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v1.5.4"
}
]
}
},
{
"repo": "https://github.com/bigbluebutton/bigbluebutton",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "2004667668f7bbb29aa235943275ee76226bad4d"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "3.0.13"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"cpe": "cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
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{
"fixed": "3.0.13"
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"source": "CPE_RANGE"
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}
],
"versions": [
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"v3.0.3",
"v3.0.0",
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"v3.0.0-rc.4",
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"3.0.0-rc.1",
"v3.0.0-beta.7",
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"v3.0.0-beta.5",
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"v2.3-rc-2",
"v2.3-rc-1",
"v2.3-beta-5",
"v2.3-beta-4",
"v2.3-beta-3",
"v2.3-beta-2",
"v2.3-beta-1",
"v2.3-alpha-8",
"v2.3-alpha-7",
"v2.3-alpha-6",
"v2.3-alpha-5",
"v2.3-alpha-4",
"v2.3-alpha-3",
"v2.3-alpha-2",
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"2.2-rc-3",
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"2.2-beta-11",
"2.2-beta-10",
"2.2-beta-9",
"2.2-beta-8",
"2.2-beta-7",
"2.2-beta-6",
"2.2-beta-5",
"2.2-beta-4",
"2.2-beta-3",
"2.2-beta-2",
"dcs-2-a",
"v0.9.0-beta",
"v0.8",
"v0.8rc2",
"v0.8b4.0",
"v0.8b4"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-55200.json"
}
}
],
"modified": "2026-10-28T02:30:40.211555144Z",
"provider": "osv",
"references": [
"https://github.com/bigbluebutton/bbb-pads/releases/tag/v1.5.4",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55200.json",
"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-9jv9-cjrm-grj2",
"https://nvd.nist.gov/vuln/detail/CVE-2025-55200",
"https://github.com/bigbluebutton/bbb-pads/pull/67",
"https://github.com/bigbluebutton/bigbluebutton/pull/23693"
],
"provider_metadata": {
"cwe_ids": [
"CWE-79"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55200.json"
}
},
"related_cves": [
{
"value": "CVE-2025-55200",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 507812,
"published_at": "2025-10-09T18:51:57.884+00:00"
}