PT-2026-26715

CVE-2026-33427

Published

2026-03-20

Updated

2026-03-27

Description by

CVSS 3.1

7.5

High

MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.3.0-latest.1 Discourse versions prior to 2026.2.1 Discourse versions prior to 2026.1.2

Description Discourse is an open-source discussion platform. An unauthenticated attacker can manipulate a legitimate Discourse authorization page to display a domain controlled by the attacker. This can be used to conduct social engineering attacks against users.

Recommendations Update Discourse to version 2026.3.0-latest.1 or later. Update Discourse to version 2026.2.1 or later. Update Discourse to version 2026.1.2 or later.

Exploitability

Exploit

Fix

Impacts

Researchers

Vendors

Affected products

Weakness enumeration

CWE-862: Missing Authorization

Related identifiers

CVE-2026-33427

GHSA-9VHG-2MX3-MQFR