Privilege escalation in Discourse

CVE-2026-44787

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, the signup flow could allow newly registered users to set primary_group_id and gain whisper-group privileges without legitimate group mem…

Vulnerability class: Privilege Escalation

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

  • Discourse — versions >= 2026.1.0-latest, < 2026.1.5, >= 2026.4.0-latest, < 2026.4.2, >= 2026.5.0-latest, < 2026.5.1

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-44787?
CVE-2026-44787 is a high-severity vulnerability in Discourse, classified under Improper Privilege Management. CVSS score: 8.2/10. Published 2026-07-09.
How severe is CVE-2026-44787?
High severity. CVSS v3 base score is 8.2 out of 10.