CVE-2026-45780 — Discourse: Private event sample invitees are serialized to non-invited event viewers
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, EventSerializer could expose invited group names, sample invitees, and atte…
Published: 2026-07-09 · CVSS: 5.3 · CVSS 3.1
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, EventSerializer could expose invited group names, sample invitees, and attendance statistics to users who could view the topic but were not entitled to view the private event invitee list. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7