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discourse
by discourse · last CVE Oct 22, 2026
294
CVEs
0
On KEV
9.9
Max CVSS
4
New 30D
Vulnerabilities294In the news0Timeline
Severity mix
Critical 8High 49Medium 217Low 20
Severity
All severities294Critical8High49Medium217Low20
Exploitation
On CISA KEV0Exploited in the wild0
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Add discourse to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-91121
5.0
0%
Sep 24
Discourse: Chat upload filenames rendered as raw HTML in excerpts
Affected: < 2026.8.0; >= 2026.7.0-latest, < 2026.7.2; >= 2026.6.0-latest, < 2026.6.3; >= 2026.1.0-latest, < 2026.1.8
CVE-2026-33185
5.0
0%
Mar 31
Discourse: Group SMTP test endpoint susceptible to SSRF
Affected: >= 2026.1.0-latest, < 2026.1.3; >= 2026.2.0-latest, < 2026.2.2; >= 2026.3.0-latest, < 2026.3.0
CVE-2026-30889
4.9
0%
Mar 20
Discourse has Unauthorized Post Data Exposure in discourse-user-notes
Affected: >= 2026.1.0-latest, < 2026.1.2; >= 2026.2.0-latest, < 2026.2.1; = 2026.3.0-latest.1
CVE-2026-27162
4.9
0%
Feb 26
DIscourse doesn't prevent whispers to leak in excerpts
Affected: < 2025.12.2; >= 2026.1.0-latest, < 2026.1.1; >= 2026.2.0-latest, < 2026.2.0
CVE-2024-56197
4.9
0%
Feb 4
Discourse is an open source platform for community discussion
Affected: before 3.3.4; before 3.4.0; 3.4.0; 3.4.0; 3.4.0; 3.4.0
CVE-2024-38360
4.9
0%
Jul 15
Discourse is an open source platform for community discussion
Affected: before 3.3.0; before 3.3.2; 3.3.0; 3.3.0
CVE-2023-30606
4.9
0%
Apr 18
Discourse is an open source platform for community discussion
Affected: through 3.0.1; before 3.1.0; 3.1.0; 3.1.0
CVE-2023-28107
4.9
1%
Mar 17
Discourse is an open-source discussion platform
Affected: through 3.0.1; before 3.1.0; 3.1.0; 3.1.0
CVE-2022-39241
4.9
1%
Nov 2
Possible Server-Side Request Forgery (SSRF) in webhooks
Affected: <= 2.8.9; <= 2.9.0.beta10
CVE-2026-72727
4.8
0%
Aug 10
Discourse: Stored XSS in the moderation review queue
Affected: < 2026.1.6; >= 2026.5.0-latest, < 2026.5.2; >= 2026.6.0-latest, < 2026.6.1
CVE-2026-91132
4.3
0%
Sep 24
Discourse: Wildcard iframe origin allowlist bypass via authority separators
Affected: < 2026.8.0; >= 2026.7.0-latest, < 2026.7.2; >= 2026.6.0-latest, < 2026.6.3; >= 2026.1.0-latest, < 2026.1.8
CVE-2026-55704
4.3
0%
Aug 17
Discourse: Shared-draft titles and excerpts leak through group post serialization
Affected: < 2026.1.6; >= 2026.5.0-latest, < 2026.5.2; >= 2026.6.0-latest, < 2026.6.1
CVE-2026-59829
4.3
0%
Aug 17
Discourse: Review queue exposes flag-related private message excerpts to category group moderators
Affected: >= 2026.1.0-latest, < 2026.1.6; >= 2026.5.0-latest, < 2026.5.2; < 2026.6.1
CVE-2026-72732
4.3
0%
Aug 10
Discourse: Templates endpoint exposes hidden tag names
Affected: < 2026.1.6; >= 2026.5.0-latest, < 2026.5.2; >= 2026.6.0-latest, < 2026.6.1; >= 2026.7.0-latest, < 2026.7.0
CVE-2026-72724
4.3
1%
Aug 10
Discourse: Private Chat Threat Message Disclosure via Chat Onebox Channel/Threat ID Mismatch
Affected: < 2026.1.6; >= 2026.5.0-latest, < 2026.5.2; >= 2026.6.0-latest, < 2026.6.1; >= 2026.7.0-latest, < 2026.7.0
CVE-2026-72722
4.3
0%
Aug 10
Discourse: Duplicate lookup reveals restricted topic titles through canonicalized URLs
Affected: < 2026.1.6; >= 2026.5.0-latest, < 2026.5.2; >= 2026.6.0-latest, < 2026.6.1; >= 2026.7.0-latest, < 2026.7.0
CVE-2026-45780
4.3
0%
Jul 9
Discourse: Private event sample invitees are serialized to non-invited event viewers
Affected: >= 2026.1.0-latest, < 2026.1.5; >= 2026.4.0-latest, < 2026.4.2; >= 2026.5.0-latest, < 2026.5.1
CVE-2026-47263
4.3
0%
Jun 12
Discourse: Prevent webhook payload disclosure on event redelivery
Affected: >= 2026.1.0-latest, < 2026.1.4; >= 2026.3.0-latest, < 2026.3.1; >= 2026.4.0-latest, < 2026.4.1
CVE-2026-44785
4.3
0%
Jun 12
Discourse: Hidden reply-to post raw can be disclosed through AI explain prompts
Affected: >= 2026.1.0-latest, < 2026.1.4; >= 2026.3.0-latest, < 2026.3.1; >= 2026.4.0-latest, < 2026.4.1
CVE-2026-44782
4.3
0%
Jun 12
Discourse: GroupPostSerializer leaks hidden full names through reaction post association
Affected: >= 2026.1.0-latest, < 2026.1.4; >= 2026.3.0-latest, < 2026.3.1; >= 2026.4.0-latest, < 2026.4.1
CVE-2026-44780
4.3
0%
Jun 12
Discourse: Category queue reviewers can read raw incoming emails from queued posts
Affected: >= 2026.4.0-latest, < 2026.4.1; >= 2026.3.0-latest, < 2026.3.1; >= 2026.1.0-latest, < 2026.1.4
CVE-2026-44779
4.3
0%
Jun 12
Discourse: Bot debug endpoints disclose whisper translation audit logs
Affected: >= 2026.1.0-latest, < 2026.1.4; >= 2026.3.0-latest, < 2026.3.1; >= 2026.4.0-latest, < 2026.4.1
CVE-2026-33514
4.3
0%
May 19
Discourse: Information Disclosure in Form Template API Due to Missing Authorization
Affected: < 2026.1.4; >= 2026.3.0-latest, < 2026.3.1; >= 2026.4.0-latest, < 2026.4.1; >= 2026.5.0-latest , < 2026.5.0-latest.1
CVE-2026-32951
4.3
0%
Mar 31
Discourse: Authorization bypass in oneboxer via user-controlled category id
Affected: >= 2026.1.0-latest, < 2026.1.3; >= 2026.2.0-latest, < 2026.2.2; >= 2026.3.0-latest, < 2026.3.0
CVE-2026-32620
4.3
0%
Mar 31
Discourse: Missing post-level authorization allows whisper metadata disclosure
Affected: >= 2026.1.0-latest, < 2026.1.3; >= 2026.2.0-latest, < 2026.2.2; >= 2026.3.0-latest, < 2026.3.0
CVE-2026-32619
4.3
0%
Mar 31
Discourse: Insufficient topic visibility check allows unauthorized poll manipulation in private categories
Affected: >= 2026.1.0-latest, < 2026.1.3; >= 2026.2.0-latest, < 2026.2.2; >= 2026.3.0-latest, < 2026.3.0
CVE-2026-32618
4.3
0%
Mar 31
Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id
Affected: >= 2026.1.0-latest, < 2026.1.3; >= 2026.2.0-latest, < 2026.2.2; >= 2026.3.0-latest, < 2026.3.0
CVE-2026-33424
4.3
0%
Mar 20
PM access granted through invites after access revocation
Affected: >= 2026.1.0-latest, < 2026.1.2; >= 2026.2.0-latest, < 2026.2.1; = 2026.3.0-latest
CVE-2026-33423
4.3
0%
Mar 20
Discourse staff can modify any user's group notification level
Affected: >= 2026.1.0-latest, < 2026.1.2; >= 2026.2.0-latest, < 2026.2.1; = 2026.3.0-latest
CVE-2026-33422
4.3
0%
Mar 20
Discourse exposes ip_address of flagged user
Affected: >= 2026.1.0-latest, < 2026.1.2; >= 2026.2.0-latest, < 2026.2.1; = 2026.3.0-latest
CVE-2026-32114
4.3
0%
Mar 20
Discourse's unscoped status lookups leak restricted metadata
Affected: >= 2026.1.0-latest, < 2026.1.2; >= 2026.2.0-latest, < 2026.2.1; = 2026.3.0-latest
CVE-2026-31869
4.3
0%
Mar 20
Discourse: Composer mentions endpoint leaks hidden group membership through PM `allowed_names` check
Affected: >= 2026.1.0-latest, < 2026.1.2; >= 2026.2.0-latest, < 2026.2.1; = 2026.3.0-latest
CVE-2026-33393
4.3
0%
Mar 19
Discourse fixes loose hostname matching in spam host allowlist
Affected: >= 2026.1.0-latest, < 2026.1.2; >= 2026.2.0-latest, < 2026.2.1; = 2026.3.0-latest
CVE-2026-27491
4.3
0%
Mar 19
Discourse has a bypass of official warnings messages by non-staff users
Affected: >= 2026.1.0-latest, < 2026.1.2; >= 2026.2.0-latest, < 2026.2.1; = 2026.3.0-latest
CVE-2026-28219
4.3
0%
Feb 26
Privilege Escalation via Mass Assignment Allows Regular Users to Set Topics as Global Banners
Affected: < 2025.12.2; >= 2026.1.0-latest, < 2026.1.1; >= 2026.2.0-latest, < 2026.2.0
CVE-2026-26973
4.3
0%
Feb 26
Discourse doesn't scope reviewable notes to user-visible reviewables
Affected: < 2025.12.2; >= 2026.1.0-latest, < 2026.1.1; >= 2026.2.0-latest, < 2026.2.0
CVE-2025-58055
4.3
0%
Oct 1
Discourse AI Suggestions Contain Insecure Direct Object Reference
Affected: < 3.5.1
CVE-2025-32376
4.3
0%
Apr 30
Discourse is an open-source discussion platform
Affected: before 3.4.3; 1.1.0; 1.1.0; 1.1.0; 1.1.0; 1.1.0; +34 more
CVE-2025-24972
4.3
0%
Mar 26
Discourse is an open-source discussion platform
Affected: before 3.3.4; before 3.4.0; 3.4.0; 3.4.0; 3.4.0; 3.4.0
CVE-2024-53994
4.3
0%
Feb 4
Discourse is an open source platform for community discussion
Affected: before 3.3.3; before 3.4.0; 3.4.0; 3.4.0; 3.4.0
CVE-2024-45297
4.3
0%
Oct 7
Discourse is an open source platform for community discussion
Affected: before 3.3.2; before 3.4.0; 3.4.0
CVE-2024-43789
4.3
0%
Oct 7
Discourse is an open source platform for community discussion
Affected: before 3.3.1; through 3.4.0
CVE-2024-36122
4.3
0%
Jul 3
Discourse is an open-source discussion platform
Affected: before 3.2.3; before 3.3.0; 3.3.0; 3.3.0; 3.3.0
CVE-2024-21655
4.3
1%
Jan 12
Discourse is a platform for community discussion
Affected: before 3.1.4; 3.2.0; 3.2.0; 3.2.0
CVE-2023-49099
4.3
0%
Jan 12
Discourse is a platform for community discussion
Affected: before 3.1.4; 3.2.0; 3.2.0; 3.2.0
CVE-2023-38685
4.3
0%
Jul 28
Discourse is an open source discussion platform
Affected: before 3.0.6; 1.1.0; 1.1.0; 1.1.0; 1.1.0; 1.1.0; +34 more
CVE-2023-37906
4.3
1%
Jul 28
Discourse is an open source discussion platform
Affected: before 3.0.6; 1.1.0; 1.1.0; 1.1.0; 1.1.0; 1.1.0; +34 more
CVE-2023-36466
4.3
0%
Jul 14
Discourse is an open source discussion platform
Affected: before 3.0.5; 1.1.0; 1.1.0; 1.1.0; 1.1.0; 1.1.0; +34 more
CVE-2023-23622
4.3
1%
Mar 17
Discourse is an open-source discussion platform
Affected: before 3.0.0; 1.1.0; 1.1.0; 1.1.0; 1.1.0; 1.1.0; +34 more
CVE-2023-23935
4.3
1%
Mar 16
Discourse is an open-source messaging platform
Affected: before 3.0.1; 1.1.0; 1.1.0; 1.1.0; 1.1.0; 1.1.0; +34 more
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