PT-2026-48978 · Discourse · Discourse

Published 2026-06-12 · Updated 2026-06-12 · CVE-2026-44780

NVD

CVSS v3.1

4.3

Medium

Base vector

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

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, ReviewableQueuedPostSerializer unconditionally included payload["raw email"] for posts that arrived via incoming email. Category moderation group members reaching the review queue could therefore read the full inbound email source (headers, sender trace, MUA, body) without being in view raw email allowed groups — the trust boundary that gates the dedicated raw-email endpoint. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2026-44780

Affected Products

Discourse

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-44780 · Security Note
• https://github.com/discourse/discourse/security/advisories/GHSA-h2jr-whpx-6w63 · Note