Medium
Security advisory
A link preview rendering issue in Rocket.Chat versions before 3.9 could lead to potential XSS attacks.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-8291
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 11:30 UTC · Revision 1
Source evidence
A link preview rendering issue in Rocket.Chat versions before 3.9 could lead to potential XSS attacks.
osv:CVE-2020-8291
Complete source record
{
"id": "1130bad73c32dcd4edfe05bd40dcdb427d64a20a4ed60ee7dda431110a5e750b",
"url": "https://osv.dev/vulnerability/CVE-2020-8291",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-8291",
"summary": "A link preview rendering issue in Rocket.Chat versions before 3.9 could lead to potential XSS attacks.",
"evidence": "osv:CVE-2020-8291",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-8291",
"aliases": [
"CVE-2020-8291"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/rocketchat/rocket.chat",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "d05e26f4fc0d770bfdaed7e8b81a55dbc85dc1d3"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "3.9.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"3.8.2",
"3.7.2",
"0.74.3",
"3.8.1",
"3.8.0",
"3.7.1",
"3.7.0",
"3.6.3",
"3.6.2",
"3.6.1",
"3.6.0",
"3.5.4",
"3.5.3",
"3.5.2",
"3.5.1",
"3.5.0",
"3.4.2",
"3.4.1",
"3.4.0",
"3.3.3",
"3.3.2",
"3.3.1",
"3.3.0",
"3.2.2",
"3.2.1",
"3.1.2",
"3.0.12",
"3.2.0",
"3.1.1",
"3.1.0",
"3.0.11",
"3.0.10",
"3.0.9",
"3.0.8",
"3.0.7",
"3.0.6",
"3.0.5",
"3.0.4",
"3.0.3",
"3.0.2",
"3.0.1",
"2.4.9",
"3.0.0",
"2.4.8",
"2.4.7",
"2.4.6",
"2.4.5",
"2.4.4",
"2.4.3",
"2.4.2",
"2.4.1",
"2.4.0",
"2.3.2",
"2.3.1",
"2.3.0",
"2.2.0",
"2.1.2",
"2.0.0",
"1.3.2",
"2.1.1",
"2.1.0",
"1.3.1",
"1.3.0",
"1.2.1",
"1.0.3",
"1.1.3",
"1.2.0",
"1.1.2",
"1.1.1",
"1.1.0",
"1.0.2",
"1.0.1",
"1.0.0",
"0.74.2",
"0.74.1",
"0.74.0",
"0.73.2",
"0.73.1",
"0.73.0",
"0.72.3",
"0.72.2",
"0.72.1",
"0.70.4",
"0.71.1",
"0.72.0",
"0.71.0",
"0.70.3",
"0.70.2",
"0.70.1",
"0.70.0",
"0.69.2",
"0.69.1",
"0.69.0",
"0.68.5",
"0.68.4",
"0.68.3",
"0.68.2",
"0.68.1",
"0.68.0",
"0.67.0",
"0.66.3",
"0.66.2",
"0.66.1",
"0.66.0",
"0.65.2",
"0.65.1",
"0.65.0",
"0.64.2",
"0.64.1",
"0.64.0",
"0.63.3",
"0.63.2",
"0.63.1",
"0.63.0",
"0.62.2",
"0.62.1",
"0.62.0",
"0.61.2",
"0.61.1",
"0.61.0",
"0.60.4",
"0.60.3",
"0.60.2",
"0.60.1",
"0.60.0",
"0.59.6",
"0.59.5",
"0.59.4",
"0.59.3",
"0.59.2",
"0.59.1",
"0.59.0",
"0.58.2",
"0.58.1",
"0.58.0",
"0.57.2",
"0.57.1",
"0.57.0",
"0.56.0",
"0.56.0-rc.7",
"0.56.0-rc.6",
"0.56.0-rc.5",
"0.56.0-rc.4",
"0.56.0-rc.3",
"0.56.0-rc.2",
"0.56.0-rc.1",
"0.56.0-rc.0",
"0.54.1",
"0.54.0",
"0.50.0",
"0.49.4",
"0.49.3",
"0.49.2",
"0.49.1",
"0.49.0",
"0.48.0",
"0.46.0",
"0.45.0",
"0.44.0",
"0.43.0",
"0.42.0",
"0.41.0",
"0.40.1",
"0.40.0",
"0.39.0",
"0.38.0",
"0.37.1",
"0.37.0",
"0.36.0",
"0.30.0",
"0.29.0",
"0.28.0",
"0.27.0",
"0.26.0",
"0.25.0",
"0.24.0",
"0.23.0",
"0.19.0",
"0.18.0",
"0.17.0",
"0.16.0",
"0.15.0",
"0.14.0",
"0.13.0",
"0.11.0",
"0.10.2",
"0.10.1",
"0.10.0",
"0.8.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8291.json"
}
}
],
"modified": "2026-10-20T10:54:25.217015191Z",
"provider": "osv",
"references": [
"https://github.com/RocketChat/Rocket.Chat/pull/19854"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-8291",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 385331,
"published_at": "2021-10-18T13:15:09.063+00:00"
}