CVE-2025-66488

Discourse is an open source discussion platform. A vulnerability present in versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 affects anyone who uses S3 for uploads. While scripts may be executed, they will only be run in the context of the S3/CDN domain, with no site credentials...

CVE-2025-67723

Discourse is an open source discussion platform. Versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 have a content-security-policy-mitigated cross-site scriptinv vulnerability on the Discourse Math plugin when using its KaTeX variant. This issue is patched in versions 3.5.4, 2025.11.2,...

CVE-2025-68666 Discourse users archives leaked to users with moderation privileges

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, users archives are viewable by users with moderation privileges even though moderators should not have access to the archives. Private topic/post content made by the users are leaked...

CVE-2025-68666 Discourse users archives leaked to users with moderation privileges

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, users archives are viewable by users with moderation privileges even though moderators should not have access to the archives. Private topic/post content made by the users are leaked...

CVE-2025-68666

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, users archives are viewable by users with moderation privileges even though moderators should not have access to the archives. Private topic/post content made by the users are leaked...

EUVD-2025-206423

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, users archives are viewable by users with moderation privileges even though moderators should not have access to the archives. Private topic/post content made by the users are leaked...

CVE-2025-68666

Discourse (open source) has a vulnerability where user archives are viewable by users with moderation privileges in versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, leaking private topic/post content and breaching confidentiality. The issue is fixed in those same versions (3.5.4, 2025...

CVE-2025-68666 Discourse users archives leaked to users with moderation privileges

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, users archives are viewable by users with moderation privileges even though moderators should not have access to the archives. Private topic/post content made by the users are leaked...

CVE-2025-68662 FinalDestination hostname matching allows SSRF protection bypass

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, a hostname validation issue in FinalDestination could allow bypassing SSRF protections under certain conditions. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and...

CVE-2025-68662 FinalDestination hostname matching allows SSRF protection bypass

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, a hostname validation issue in FinalDestination could allow bypassing SSRF protections under certain conditions. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and...

CVE-2025-68662

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, a hostname validation issue in FinalDestination could allow bypassing SSRF protections under certain conditions. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and...

EUVD-2025-206421

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, a hostname validation issue in FinalDestination could allow bypassing SSRF protections under certain conditions. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and...

CVE-2025-68662

CVE-2025-68662 affects the Discourse platform. A hostname validation issue in the FinalDestination component in versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 could allow bypassing SSRF protections under certain conditions. The issue is fixed in versions 3.5.4, 2025.11.2, 2025.12.1, ...

CVE-2025-68662 FinalDestination hostname matching allows SSRF protection bypass

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, a hostname validation issue in FinalDestination could allow bypassing SSRF protections under certain conditions. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and...

CVE-2025-68660 Discourse AI Discover's continue conversation allows threat actor to impersonate user

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, an endpoint lets any authenticated user bypass the aidiscoverpersona access controls and gain ongoing DM access to personas that may be wired to staff-only categories, RAG document set...

EUVD-2025-206452

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, an endpoint lets any authenticated user bypass the aidiscoverpersona access controls and gain ongoing DM access to personas that may be wired to staff-only categories, RAG document set...

CVE-2025-68660 Discourse AI Discover's continue conversation allows threat actor to impersonate user

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, an endpoint lets any authenticated user bypass the aidiscoverpersona access controls and gain ongoing DM access to personas that may be wired to staff-only categories, RAG document set...

CVE-2025-68660

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, an endpoint lets any authenticated user bypass the aidiscoverpersona access controls and gain ongoing DM access to personas that may be wired to staff-only categories, RAG document set...

CVE-2025-68660 Discourse AI Discover's continue conversation allows threat actor to impersonate user

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, an endpoint lets any authenticated user bypass the aidiscoverpersona access controls and gain ongoing DM access to personas that may be wired to staff-only categories, RAG document set...

CVE-2025-68659 Discourse has DoS vulnerability in username change endpoint

Discourse is an open source discussion platform. Versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 have an application level denial of service vulnerabilityin the username change functionality at try.discourse.org. The vulnerability allows attackers to cause noticeable server delays and...