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CVE-2026-27152: Improper Access Control

🗓️ 26 Feb 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com

Discourse prior to 2025.12.2, 2026.1.1, 2026.2.0 bypasses DM restrictions via Chat::AddUsersToChannel.

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-27152
26 Feb 202620:00
–attackerkb
cnnvd
CNNVD
Discourse 访问控制错误漏洞
26 Feb 202600:00
–cnnvd
cnvd
CNVD
Discourse Access Control Error Vulnerability (CNVD-2026-17484)
9 Mar 202600:00
–cnvd
cve
CVE
CVE-2026-27152
26 Feb 202620:00
–cve
cvelist
Cvelist
CVE-2026-27152 DIscourse has DM communication-preference bypass when adding members
26 Feb 202620:00
–cvelist
euvd
EUVD
EUVD-2026-8891
26 Feb 202620:00
–euvd
nvd
NVD
CVE-2026-27152
26 Feb 202621:28
–nvd
osv
OSV
BIT-DISCOURSE-2026-27152 DIscourse has DM communication-preference bypass when adding members
3 Mar 202613:29
–osv
ptsecurity
Positive Technologies
PT-2026-22187
26 Feb 202600:00
–ptsecurity
redhatcve
RedhatCVE
CVE-2026-27152
28 Feb 202601:56
–redhatcve
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02 Mar 2026 00:00Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.13.8
CVSS 45.3
EPSS0.00268
SSVC
0