CVE-2026-59830Medium· 5.4▾ SunlitDiscourse is an open-source discussion platform. Prior to 2026.7.0, the post action component failed to escape user-controlled display names before interpolating them into an HTML string passed to trustHTML. A user who could choose a cra…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.7 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Discourse is an open-source discussion platform. Prior to 2026.7.0, the post action component failed to escape user-controlled display names before interpolating them into an HTML string passed to trustHTML. A user who could choose a crafted display name could persist markup in post action descriptions. Viewing the affected user activity streams could execute attacker-controlled script in another user's browser. This issue is fixed in version 2026.7.0.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-32607Medium· 5.4Discourse is an open-source discussion platform
CVE-2026-32273Medium· 5.4Discourse is an open-source discussion platform
CVE-2026-32243Medium· 5.4Discourse is an open-source discussion platform
CVE-2026-27481Medium· 5.3Discourse is an open-source discussion platform
CVE-2026-32618Medium· 4.3Discourse is an open-source discussion platform
CVE-2026-32615Medium· 5.4Discourse is an open-source discussion platform