Vulnerabilities CVE-2026-55704

CVE-2026-55704

Medium

Open

TLP:CLEAR

Discourse: Shared-draft titles and excerpts leak through group post serialization

NVD CVE.org

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Description

Discourse is an open-source discussion platform. Prior o 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, users who were allowed to view a group’s activity, but were not permitted to see shared drafts, could still receive shared-draft entries through the group posts and group mentions endpoints. This could disclose shared-draft topic titles and post excerpt/content, resulting in an information disclosure of unpublished draft material. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.

Details

CVSS Score: 4.3
EPSS Score ⓘ: 0.17%

6.6th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Confidence: 90%
Published: Aug 17, 2026
Last Modified: Aug 17, 2026

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