- Description
- 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.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
- Products
- discourse
CVSS 4.0
- Type
- Secondary
- Base score
- 4.9
- Impact score
- -
- Exploitability score
- -
- Vector string
- 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- MEDIUM
CVSS 3.1
- Type
- Primary
- Base score
- 4.9
- Impact score
- 3.6
- Exploitability score
- 1.2
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
- Severity
- MEDIUM
- security-advisories@github.com
- CWE-200
- Hype score
- Not currently trending
[
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
"matchCriteriaId": "452E5338-8153-4A3E-B634-CAE43E14B557",
"versionEndExcluding": "2025.12.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1CAFCC9D-53D7-4017-85A5-EE6CA5A6A11C",
"versionEndExcluding": "2026.1.1",
"versionStartIncluding": "2026.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:discourse:discourse:2026.2.0:*:*:*:latest:*:*:*",
"matchCriteriaId": "BB002FDC-BC71-4C46-8AAF-A34EC717E0E7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
]