PT-2026-69868 · Discourse · Discourse

CVE-2026-72728

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Published

2026-08-10

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Updated

2026-08-17

CVSS v3.1

6.3

Medium

VectorAV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.1.7
Description An authenticated user can submit specially formed URLs to bypass the Onebox allowlist, which allows the embedding of malicious content within a site. Onebox is a feature that expands URLs into rich previews.
Recommendations Update to version 2026.1.7, 2026.6.2, 2026.7.1, or 2026.8.0-latest.1.

Exploit

Fix

RCE

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Weakness Enumeration

CWE-20

Related Identifiers

BIT-DISCOURSE-2026-72728
CVE-2026-72728
GHSA-QP9J-3V7R-WRVR

Affected Products

Discourse