PT-2026-29317 · Discourse · Discourse

Published 2026-03-31 · Updated 2026-03-31 · CVE-2026-33185

Mitre

CVSS v4.0

5.3

Medium

AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, the group email settings test endpoint could be used to make the server initiate outbound connections to arbitrary hosts and ports. This could allow probing of internal network infrastructure. The endpoint was accessible to non-staff group owners. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-33185

Affected Products

Discourse

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-33185 · Security Note
• https://github.com/discourse/discourse/security/advisories/GHSA-5976-77mj-m4h3 · Note
• https://github.com/discourse/discourse/commit/e75cf456e8e318290c569bd6e8fa0f2586ffc530 · Note