BIT-discourse-2026-59830

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/discourse/BIT-discourse-2026-59830.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-discourse-2026-59830
Aliases
Published
2026-09-29T08:46:16Z
Modified
2026-09-29T10:10:58Z
Summary
Discourse: Stored XSS via unescaped actor name in post actions
Details

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.

Database specific 
{
    "cpes":  [
        "cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*",
        "cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*"
    ],
    "severity":  "Medium"
}
References

Affected packages

Bitnami / discourse

Package

Name
discourse
Purl
pkg:bitnami/discourse

Severity

  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2026.7.0

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/discourse/BIT-discourse-2026-59830.json"