Medium severity6.1NVD Advisory· Published Aug 13, 2026· Updated Sep 24, 2026
CVE-2026-73038
CVE-2026-73038
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.
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Affected products
1Patches
Vulnerability mechanics
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