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.

INFO

Published Date :

2026-03-09T22:42:40.014Z

Last Modified :

2026-03-10T14:17:30.046Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-30913 vulnerability.

Vendors Products
Flarum
  • Nicknames
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-30913.

URL Resource
https://github.com/flarum/framework/security/advisories/GHSA-3c4m-j3g4-hh25 cve-icon cve-icon cve-icon
https://github.com/flarum/nicknames/commit/4dde99729abdce8f6e2a7437c86e38735fdcca28 cve-icon cve-icon
https://github.com/flarum/nicknames/releases/tag/v1.8. cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact