BIT-discourse-2026-55424

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/discourse/BIT-discourse-2026-55424.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-discourse-2026-55424
Aliases
Published
2026-07-15T15:56:25.576Z
Modified
2026-07-15T16:27:36.197517132Z
Summary
Discourse: Topic featured link susceptible to stored XSS
Details

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, a topic "featured link" was not sufficiently normalized and escaped before being rendered in the topic list, allowing a user who can set a featured link to inject JavaScript when default Content Security Policy protections were modified or disabled. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.

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

Affected packages

Bitnami / discourse

Package

Name
discourse
Purl
pkg:bitnami/discourse

Severity

  • 7.4 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
2026.1.0
Fixed
2026.1.5
Introduced
2026.4.0
Fixed
2026.4.2
Introduced
2026.5.0
Fixed
2026.5.1

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/discourse/BIT-discourse-2026-55424.json"