Medium
Discourse: Templates endpoint exposes hidden tag names
Type: advisorySources: OSV
Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the discourse_templates endpoint exposed hidden tag names because DiscourseTemplates::TemplatesSerializer in plugins/discourse-templates/app/serializers/discourse_templates/templates_serializer.rb did not filter tags through the request Guardian. The serializer did not respect tag group permissions, allowing users to see tags they were not permitted to view. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-72732
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 20:10 UTC · Revision 1
Source evidence
Discourse: Templates endpoint exposes hidden tag names
core-osv · Original sourcePublished 10 Aug 2026, 17:18 UTC
Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the discourse_templates endpoint exposed hidden tag names because DiscourseTemplates::TemplatesSerializer in plugins/discourse-templates/app/serializers/discourse_templates/templates_serializer.rb did not filter tags through the request Guardian. The serializer did not respect tag group permissions, allowing users to see tags they were not permitted to view. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.
osv:CVE-2026-72732
Complete source record
{
"id": "bee5c317ad6918f60900518663debf6b875fa5370ee3e9d6999ee5e3f33a651e",
"url": "https://osv.dev/vulnerability/CVE-2026-72732",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Discourse: Templates endpoint exposes hidden tag names",
"summary": "Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the discourse_templates endpoint exposed hidden tag names because DiscourseTemplates::TemplatesSerializer in plugins/discourse-templates/app/serializers/discourse_templates/templates_serializer.rb did not filter tags through the request Guardian. The serializer did not respect tag group permissions, allowing users to see tags they were not permitted to view. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.",
"evidence": "osv:CVE-2026-72732",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-72732",
"aliases": [
"BIT-discourse-2026-72732",
"CVE-2026-72732",
"GHSA-xrgc-52m8-82hm"
],
"metrics": [
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"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
}
],
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],
"modified": "2026-10-28T02:30:23.367075679Z",
"provider": "osv",
"references": [
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"https://github.com/discourse/discourse/security/advisories/GHSA-xrgc-52m8-82hm",
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},
"related_cves": [
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"value": "CVE-2026-72732",
"evidence": "/id"
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"source_id": "core-osv",
"document_id": 489644,
"published_at": "2026-08-10T17:18:00.524+00:00"
}