Medium
DIscourse doesn't prevent whispers to leak in excerpts
Type: advisorySources: OSV
Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, `posts_nearby` was checking topic access but then returning all posts regardless of type, including whispers that should only be visible to whisperers. Use `Post.secured(guardian)` to properly filter post types based on user permissions. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-27162
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 02:02 UTC · Revision 1
Source evidence
DIscourse doesn't prevent whispers to leak in excerpts
core-osv · Original sourcePublished 26 Feb 2026, 19:58 UTC
Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, `posts_nearby` was checking topic access but then returning all posts regardless of type, including whispers that should only be visible to whisperers. Use `Post.secured(guardian)` to properly filter post types based on user permissions. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.
osv:CVE-2026-27162
Complete source record
{
"id": "97a119ca9bbc58d45eb4e0fc04f28a4903be3c9c2f1a4ff9007ac18910d06b6e",
"url": "https://osv.dev/vulnerability/CVE-2026-27162",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DIscourse doesn't prevent whispers to leak in excerpts",
"summary": "Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, `posts_nearby` was checking topic access but then returning all posts regardless of type, including whispers that should only be visible to whisperers. Use `Post.secured(guardian)` to properly filter post types based on user permissions. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.",
"evidence": "osv:CVE-2026-27162",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-27162",
"aliases": [
"BIT-discourse-2026-27162",
"CVE-2026-27162",
"GHSA-gffm-43j4-372w"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U"
}
],
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"repo": "https://github.com/discourse/discourse",
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"modified": "2026-10-28T02:30:52.758376679Z",
"provider": "osv",
"references": [
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"https://github.com/discourse/discourse/security/advisories/GHSA-gffm-43j4-372w",
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"source_id": "core-osv",
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"published_at": "2026-02-26T19:58:33.819+00:00"
}