PT-2026-24146 · WordPress+1 · Flarum/Nicknames+1

Imorland · Published 2026-03-09 · Updated 2026-03-10 · CVE-2026-30913

Positive Technologies (AI Summary)

CVSS v3.1

4.6

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Flarum (affected versions not specified)

Description The Flarum forum software, when used with the flarum/nicknames extension, allows a registered user to set a nickname that email clients may interpret as a hyperlink. This nickname is directly inserted into plain-text notification emails. Recipients could be misled into visiting domains controlled by an attacker.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-30913

GHSA-3C4M-J3G4-HH25

Affected Products

Flarum

Flarum/Nicknames

References · 15

• 🔥 https://github.com/flarum/framework/security/advisories/GHSA-3c4m-j3g4-hh25 · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30913.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-30913 · Security Note
• https://osv.dev/vulnerability/CVE-2026-30913 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-3c4m-j3g4-hh25 · Vendor Advisory
• https://github.com/flarum/framework · Note
• https://github.com/flarum/nicknames/releases/tag/v1.8.3 · Note
• https://github.com/flarum/nicknames/commit/4dde99729abdce8f6e2a7437c86e38735fdcca28 · Note
• https://github.com/flarum/nicknames/releases/tag/v1.8. · Note
• https://twitter.com/dailycve/status/2031213723726065919 · Twitter Post
• https://twitter.com/infoflowcloud/status/2031295625824755857 · Twitter Post
• https://reddit.com/r/VulnMatter/comments/1rpx2ut/resumen_diario_de_vulnerabilidades_10032026 · Reddit Post
• https://twitter.com/CVEnew/status/2031294599512396190 · Twitter Post
• https://t.me/CVEtracker/46950 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2031451179033465215 · Twitter Post