High
Discourse vulnerable to Cross-site Scripting in local oneboxes
Type: advisorySources: OSV
Discourse is an open source platform for community discussion. Versions prior to 2.8.13 (stable), 3.0.0.beta16 (beta) and 3.0.0beta16 (tests-passed), are vulnerable to cross-site Scripting. A maliciously crafted URL can be included in a post to carry out cross-site scripting attacks on sites with disabled or overly permissive CSP (Content Security Policy). Discourse's default CSP prevents this vulnerability. This vulnerability is patched in versions 2.8.13 (stable), 3.0.0.beta16 (beta) and 3.0.0beta16 (tests-passed). As a workaround, enable and/or restore your site's CSP to the default one provided with Discourse.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2023-22468
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 04:08 UTC · Revision 1
Source evidence
Discourse vulnerable to Cross-site Scripting in local oneboxes
core-osv · Original sourcePublished 26 Jan 2023, 08:31 UTC
Discourse is an open source platform for community discussion. Versions prior to 2.8.13 (stable), 3.0.0.beta16 (beta) and 3.0.0beta16 (tests-passed), are vulnerable to cross-site Scripting. A maliciously crafted URL can be included in a post to carry out cross-site scripting attacks on sites with disabled or overly permissive CSP (Content Security Policy). Discourse's default CSP prevents this vulnerability. This vulnerability is patched in versions 2.8.13 (stable), 3.0.0.beta16 (beta) and 3.0.0beta16 (tests-passed). As a workaround, enable and/or restore your site's CSP to the default one provided with Discourse.
osv:CVE-2023-22468
Complete source record
{
"id": "aea532f450e1928ed9a6135f773623512e5fe04f6720d062ebaa7cc2702a9adf",
"url": "https://osv.dev/vulnerability/CVE-2023-22468",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Discourse vulnerable to Cross-site Scripting in local oneboxes",
"summary": "Discourse is an open source platform for community discussion. Versions prior to 2.8.13 (stable), 3.0.0.beta16 (beta) and 3.0.0beta16 (tests-passed), are vulnerable to cross-site Scripting. A maliciously crafted URL can be included in a post to carry out cross-site scripting attacks on sites with disabled or overly permissive CSP (Content Security Policy). Discourse's default CSP prevents this vulnerability. This vulnerability is patched in versions 2.8.13 (stable), 3.0.0.beta16 (beta) and 3.0.0beta16 (tests-passed). As a workaround, enable and/or restore your site's CSP to the default one provided with Discourse.",
"evidence": "osv:CVE-2023-22468",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2023-22468",
"aliases": [
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"CVE-2023-22468",
"GHSA-8mr2-xf8r-wr8m"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
}
],
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"modified": "2026-10-28T02:30:46.695530264Z",
"provider": "osv",
"references": [
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"https://github.com/discourse/discourse/security/advisories/GHSA-8mr2-xf8r-wr8m",
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"source_id": "core-osv",
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"published_at": "2023-01-26T08:31:00.485+00:00"
}