Medium
Cross-site Scripting (XSS) via topic titles when CSP disabled in Discourse
Type: advisorySources: OSV
Discourse is an open source platform for community discussion. In affected versions with some combinations of plugins, and with CSP disabled, activity streams in the user's profile page may be vulnerable to XSS. This has been patched in the latest version of Discourse core. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-53266
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 18:32 UTC · Revision 1
Source evidence
Cross-site Scripting (XSS) via topic titles when CSP disabled in Discourse
core-osv · Original sourcePublished 4 Feb 2025, 21:18 UTC
Discourse is an open source platform for community discussion. In affected versions with some combinations of plugins, and with CSP disabled, activity streams in the user's profile page may be vulnerable to XSS. This has been patched in the latest version of Discourse core. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled.
osv:CVE-2024-53266
Complete source record
{
"id": "a0b760d859825b4b45ea369eb42fa46ebefadcaa1e4dca76abf43029319e6bfd",
"url": "https://osv.dev/vulnerability/CVE-2024-53266",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Cross-site Scripting (XSS) via topic titles when CSP disabled in Discourse",
"summary": "Discourse is an open source platform for community discussion. In affected versions with some combinations of plugins, and with CSP disabled, activity streams in the user's profile page may be vulnerable to XSS. This has been patched in the latest version of Discourse core. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled.",
"evidence": "osv:CVE-2024-53266",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2024-53266",
"aliases": [
"BIT-discourse-2024-53266",
"CVE-2024-53266",
"GHSA-hw4j-4hg7-22h2"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/discourse/discourse",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "7066b89b18555d4dbdaeed8eebafeb63da950faf"
},
{
"fixed": "4abee26a32a1bd38ec19dfd9f28074db17ebb33a"
},
{
"introduced": "85abac4230da6114dfa95702d3529ca632fc0d06"
},
{
"last_affected": "bc4ab613ced6dcc035386568c15102c0a0783320"
}
],
"database_specific": {
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{
"cpe": "cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*",
"range": [
{
"introduced": "0"
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{
"fixed": "3.3.3"
}
],
"source": "CPE_RANGE"
},
{
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"range": [
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{
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}
],
"source": "CPE_RANGE"
},
{
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"range": [
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{
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],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:discourse:discourse:3.4.0:beta2:*:*:beta:*:*:*",
"range": [
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"introduced": "3.4.0-beta2"
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{
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},
{
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"range": [
{
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{
"last_affected": "3.4.0-beta3"
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],
"source": "CPE_STRING"
}
]
}
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-53266.json"
}
}
],
"modified": "2026-10-28T02:30:22.363141781Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/53xxx/CVE-2024-53266.json",
"https://github.com/discourse/discourse/security/advisories/GHSA-hw4j-4hg7-22h2",
"https://nvd.nist.gov/vuln/detail/CVE-2024-53266"
],
"provider_metadata": {
"cwe_ids": [
"CWE-79"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/53xxx/CVE-2024-53266.json"
}
},
"related_cves": [
{
"value": "CVE-2024-53266",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 488530,
"published_at": "2025-02-04T21:18:19.591+00:00"
}