CVE-2026-55424
EUVD-2026-4273309.07.2026, 22:17
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.
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| discourse | discourse | 2026.1.0 ≤ 𝑥 < 2026.1.5 |
| discourse | discourse | 2026.4.0 ≤ 𝑥 < 2026.4.2 |
| discourse | discourse | 2026.5.0 ≤ 𝑥 < 2026.5.1 |
| discourse | discourse | 2026.6.0 |
𝑥
= Vulnerable software versions
References