Medium
Multisite denial of service through unsanitized dynamic dispatch to SiteSetting in Discourse
Type: advisorySources: OSV
Discourse is an open source platform for community discussion. In affected versions a user logged as an administrator can call arbitrary methods on the `SiteSetting` class, notably `#clear_cache!` and `#notify_changed!`, which when done on a multisite instance, can affect the entire cluster resulting in a denial of service. Users not running in multisite environments are not affected. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2023-30606
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 03:07 UTC · Revision 1
Source evidence
Multisite denial of service through unsanitized dynamic dispatch to SiteSetting in Discourse
core-osv · Original sourcePublished 18 Apr 2023, 21:36 UTC
Discourse is an open source platform for community discussion. In affected versions a user logged as an administrator can call arbitrary methods on the `SiteSetting` class, notably `#clear_cache!` and `#notify_changed!`, which when done on a multisite instance, can affect the entire cluster resulting in a denial of service. Users not running in multisite environments are not affected. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. There are no known workarounds for this vulnerability.
osv:CVE-2023-30606
Complete source record
{
"id": "9f59ff7b881c1e082c00bb90cb568a1f0ad7b7b02a442f0dca977af0309b0ed5",
"url": "https://osv.dev/vulnerability/CVE-2023-30606",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Multisite denial of service through unsanitized dynamic dispatch to SiteSetting in Discourse",
"summary": "Discourse is an open source platform for community discussion. In affected versions a user logged as an administrator can call arbitrary methods on the `SiteSetting` class, notably `#clear_cache!` and `#notify_changed!`, which when done on a multisite instance, can affect the entire cluster resulting in a denial of service. Users not running in multisite environments are not affected. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. There are no known workarounds for this vulnerability.",
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"GHSA-jj93-w3mv-3jvv"
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"modified": "2026-10-28T02:30:53.384361646Z",
"provider": "osv",
"references": [
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"source_id": "core-osv",
"document_id": 522068,
"published_at": "2023-04-18T21:36:08.683+00:00"
}