Medium severity4.6NVD Advisory· Published Mar 10, 2026· Updated Apr 29, 2026
CVE-2026-30913
CVE-2026-30913
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
flarum/nicknamesPackagist | < 1.8.3 | 1.8.3 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-3c4m-j3g4-hh25ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-30913ghsaADVISORY
- github.com/flarum/framework/security/advisories/GHSA-3c4m-j3g4-hh25nvdWEB
- github.com/flarum/nicknames/commit/4dde99729abdce8f6e2a7437c86e38735fdcca28nvdWEB
- github.com/flarum/nicknames/releases/tag/v1.8.nvdWEB
- github.com/flarum/nicknames/releases/tag/v1.8.3ghsaWEB
News mentions
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