SEPTEMBER 19, 2026
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Case File

CVE-2026-59829

MEDIUM · CVSS 4.3 EPSS 0.23% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-17 · Last synced 2026-09-16

CyberRota Analysis

AI-Generated

Discourse platforms with category group moderation enabled are vulnerable to unauthorized access to excerpts of private messages linked to flagged content, allowing moderators to view discussions they are not authorized to see. While the integrity of the content remains intact, this exposure compromises the confidentiality of sensitive communications. Organizations using affected versions should prioritize upgrading to the patched releases (2026.1.6, 2026.5.2, 2026.6.1, or 2026.7.1) to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-59829
Severity
MEDIUM
CVSS
4.3
EPSS
0.23%

Original NVD Description

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.1, on sites with category group moderation enabled, the review queue could include an excerpt (and permalink) of the private message attached to a flag, even when the reviewing category moderator was not a participant in that message. These notify_moderators flag messages are addressed only to moderators and, for core flags, to a category's moderation groups as they existed when the flag was raised, so a category group moderator could read flag-discussion content they were not authorized to see. This affects official plugins that create such messages and core flags raised before a moderator's group was granted moderation of the category. Only the confidentiality of a limited excerpt of these flag-related private messages is affected; no content can be modified or deleted. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.1.