CVE-2026-73038 — NodeBB < 4.15.0 Stored XSS via ActivityPub emoji tag.icon.url and tag.name
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 de…
Published: 2026-08-13 · CVSS: 5.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7