{"cve":"CVE-2026-30913","nvd":{"published":"2026-03-10T17:40:15.210","modified":"2026-06-17T10:33:08.410","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","score":4.6},"cwes":["CWE-79"],"references":["https://github.com/flarum/framework/security/advisories/GHSA-3c4m-j3g4-hh25","https://github.com/flarum/nicknames/commit/4dde99729abdce8f6e2a7437c86e38735fdcca28","https://github.com/flarum/nicknames/releases/tag/v1.8.","https://github.com/flarum/framework/security/advisories/GHSA-3c4m-j3g4-hh25"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:25:53.701907451+00:00"},"epss":{"cve":"CVE-2026-30913","score":0.00176,"percentile":0.07046,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}