VYPR
Unrated severityNVD Advisory· Published Jul 9, 2026· Updated Jul 10, 2026

Discourse: Topic featured link susceptible to stored XSS

CVE-2026-55424

Description

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

2

Patches

Vulnerability mechanics

References

9

News mentions

0

No linked articles in our index yet.