HTML injection in oneboxed links

Moderate

jomaxro published GHSA-j95w-5hvx-jp5w

Nov 9, 2023

Package

No package listed

Affected versions

stable < 3.1.3; beta/tests-passed < 3.2.0.beta3

Patched versions

stable >= 3.1.3; beta/tests-passed >= 3.2.0.beta3

Description

Impact

Some links can inject arbitrary HTML tags when rendered through our Onebox engine.

Patches

The issue is patched in the latest stable, beta and tests-passed version of Discourse.

Workarounds

None

Severity

Moderate

5.3

/ 10

CVSS base metrics

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L