---
id: CVE-2026-72730
title: Discourse is an open-source discussion platform
summary: >-
  Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2,
  2026.6.1, and 2026.7.0, the Rich Text Editor rendered a chat-transcript
  username as HTML, allowing stored cross-site scripting. This issue is fixed in
  versions…
severity: high
cvss: 8.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'
cwe:
  - CWE-79
published: '2026-08-10'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:54:37.790'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72730'
references:
  - url: >-
      https://github.com/discourse/discourse/commit/32920affe4ad97b461ca2ae2f664c5fefc374baf
    label: security-advisories@github.com
  - url: >-
      https://github.com/discourse/discourse/commit/3fb1e8ead0d4f48d2cf55c8110825c7e8a6a45f5
    label: security-advisories@github.com
  - url: >-
      https://github.com/discourse/discourse/commit/7eb35d076ab9b6a612e86182336ce9787ce402ea
    label: security-advisories@github.com
  - url: >-
      https://github.com/discourse/discourse/commit/9633b8ecaf5a99f0407f5261b9bd1a05f7dac529
    label: security-advisories@github.com
  - url: >-
      https://github.com/discourse/discourse/security/advisories/GHSA-wg48-qxjc-f459
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.0043
epssPercentile: 0.34605
ingestedAt: '2026-09-08T21:11:12.273Z'
---

## Overview

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the Rich Text Editor rendered a chat-transcript username as HTML, allowing stored cross-site scripting. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.