CVE-2026-32099

Received Received - Intake

Information Disclosure via Onebox Preview in Discourse User Profiles

Publication date: 2026-03-19

Last updated on: 2026-03-24

Assigner: GitHub, Inc.

Description

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, when a user has `hide_profile` enabled, their bio, location, and website were still exposed through the user onebox preview. An authenticated user could request a onebox for a hidden user's profile URL and receive their hidden profile fields (bio, location, website) in the response. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-03-19

Last Modified

2026-03-24

Generated

2026-07-06

AI Q&A

2026-03-20

EPSS Evaluated

2026-07-04

NVD

CVE-2026-32099

Affected Vendors & Products

Vendor	Product	Version / Range
discourse	discourse	From 2026.1.0 (inc) to 2026.1.2 (exc)
discourse	discourse	From 2026.2.0 (inc) to 2026.2.1 (exc)
discourse	discourse	2026.3.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This vulnerability affects the Discourse open-source discussion platform. Before certain fixed versions, when a user enabled the 'hide_profile' setting to keep their bio, location, and website private, these fields were still exposed through the user onebox preview feature. An authenticated user could request a onebox preview of a hidden user's profile URL and receive the hidden profile information in the response, thus bypassing the privacy setting.

Impact Analysis

This vulnerability can lead to unintended disclosure of personal information such as bio, location, and website of users who intended to keep this information hidden. An authenticated user could access private profile details of other users, potentially compromising user privacy and trust in the platform.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should upgrade your Discourse installation to one of the patched versions: 2026.3.0-latest.1, 2026.2.1, or 2026.1.2.

No known workarounds are available, so applying the update is the recommended immediate step.

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