Medium
Discourse vulnerable to exposure of number of topics recently created in private categories
Type: advisorySources: OSV
Discourse is an open source discussion platform. Prior to version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches, an attacker could use the new topics dismissal endpoint to reveal the number of topics recently created (but not the actual content thereof) in categories they didn't have access to. This issue is patched in version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches. There are no known workarounds.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2023-34250
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 03:36 UTC · Revision 1
Source evidence
Discourse vulnerable to exposure of number of topics recently created in private categories
core-osv · Original sourcePublished 13 Jun 2023, 21:41 UTC
Discourse is an open source discussion platform. Prior to version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches, an attacker could use the new topics dismissal endpoint to reveal the number of topics recently created (but not the actual content thereof) in categories they didn't have access to. This issue is patched in version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches. There are no known workarounds.
osv:CVE-2023-34250
Complete source record
{
"id": "6ad829e02120c66eec49ae508603cfdecf908228324e9fd0ea89a8efbda188b6",
"url": "https://osv.dev/vulnerability/CVE-2023-34250",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Discourse vulnerable to exposure of number of topics recently created in private categories",
"summary": "Discourse is an open source discussion platform. Prior to version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches, an attacker could use the new topics dismissal endpoint to reveal the number of topics recently created (but not the actual content thereof) in categories they didn't have access to. This issue is patched in version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches. There are no known workarounds.",
"evidence": "osv:CVE-2023-34250",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2023-34250",
"aliases": [
"BIT-discourse-2023-34250",
"CVE-2023-34250",
"GHSA-q8m5-wmjr-3ppg"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/discourse/discourse",
"type": "GIT",
"events": [
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{
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{
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"source": "CPE_RANGE"
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],
"modified": "2026-10-28T02:30:49.413005314Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34250.json",
"https://github.com/discourse/discourse/security/advisories/GHSA-q8m5-wmjr-3ppg",
"https://nvd.nist.gov/vuln/detail/CVE-2023-34250"
],
"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34250.json"
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"evidence": "/id"
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"security_relevant": true,
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},
"source_id": "core-osv",
"document_id": 517807,
"published_at": "2023-06-13T21:41:29.652+00:00"
}