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CVE-2026-21865

🗓️ 29 Jan 2026 21:21:12Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 17 Views

CVE-2026-21865: Moderators could convert personal messages to public topics in older Discourse; fixed in later versions.

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Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-21865
28 Jan 202619:51
–attackerkb
cnnvd
CNNVD
Discourse security vulnerabilities
28 Jan 202600:00
–cnnvd
cve
CVE
CVE-2026-21865
28 Jan 202619:51
–cve
cvelist
Cvelist
CVE-2026-21865 Discourse topic conversion permission vulnerability for moderators
28 Jan 202619:51
–cvelist
euvd
EUVD
EUVD-2026-4874
28 Jan 202619:51
–euvd
mend
Mend
CVE-2026-21865
28 Jan 202619:51
–mend
nvd
NVD
CVE-2026-21865
28 Jan 202620:16
–nvd
osv
OSV
BIT-DISCOURSE-2026-21865 Discourse topic conversion permission vulnerability for moderators
2 Feb 202608:42
–osv
ptsecurity
Positive Technologies
PT-2026-5210
28 Jan 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-21865: Missing Authorization
28 Jan 202600:00
–rapid7
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29 Jan 2026 21:21Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.16.5
EPSS0.00258
SSVC
17