CVE-2026-73038
MEDIUM
NVD
CVSS Score
6.1
Severity
MEDIUM
Published
Aug 13, 2026
Vendor
unknown
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.