VULNERABILITY INTELLIGENCE
CVE-2026-30913
CVSS score4.6 MEDIUM
EPSS probability0.18%
CISA KEVNot currently listed
Published2026-03-10
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Description
Flarum is open-source forum software. When the flarum/nicknames extension is enabled, a registered user can set their nickname to a string that email clients interpret as a hyperlink. The nickname is inserted verbatim into plain-text notification emails, and recipients may be misled into visiting attacker-controlled domains.
Weakness classification
- security-advisories@github.com: CWE-79