CVE-2026-72730
8.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
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 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| discourse | discourse | < 2026.1.6 | affected |
| discourse | discourse | >= 2026.5.0-latest, < 2026.5.2 | affected |
| discourse | discourse | >= 2026.6.0-latest, < 2026.6.1 | affected |
Weaknesses
- CWE-79: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://github.com/discourse/discourse/security/advisories/GHSA-wg48-qxjc-f459
- https://github.com/discourse/discourse/commit/32920affe4ad97b461ca2ae2f664c5fefc374baf
- https://github.com/discourse/discourse/commit/3fb1e8ead0d4f48d2cf55c8110825c7e8a6a45f5
- https://github.com/discourse/discourse/commit/7eb35d076ab9b6a612e86182336ce9787ce402ea
- https://github.com/discourse/discourse/commit/9633b8ecaf5a99f0407f5261b9bd1a05f7dac529
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