Description
NodeBB before 4.15.0 contains a stored cross-site scripting vulnerability in the renderEmoji function that fails to escape tag.icon.url and tag.name attributes. Attackers can deliver malicious ActivityPub Create/Note objects with crafted emoji tags to inject arbitrary HTML and JavaScript into stored post content, executing code in all viewers- browsers.
CVSS 6.1EPSS 0.20500000000000002%Risk 0.62
View source- Published
- 2026-08-13 19:17:34
- Affected versions
- <4.15.0
- Type
- Web application
- Last modified
- 2026-08-14 17:20:32
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N