Skip to content
CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-73038

NodeBB < 4.15.0 Stored XSS via ActivityPub emoji tag.icon.url and tag.name

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

NodeBB NodeBB

Default version status: affected

  • 0 to < 4.15.0affected
pkg:github/NodeBB/NodeBB

References