MEDIUMCVSS v3.1 6.5Vulnerability

CVE-2026-121730

emailflare before commit cf31f33 contains a missing authorization vulnerability in POST /api/inbox/compose that allows authenticated members to send mail as any sender address. Attackers can supply an arbitrary from field, which is passed unchecked to the Cloudflare send call, to impersonate other users or the organization to external recipients.

Properties

Severity
MEDIUM
Nvd fetched at
2026-11-04T01:29:06.847378+00:00
Cvss score
6.5
Cvss severity
MEDIUM
Retrieved at
2026-11-04T01:30:00+00:00
Score
6.5
Last source
NVD
Cvss version
3.1
Cve id
CVE-2026-121730
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
First seen by Signal
2026-11-04T01:30:00+00:00
Name
CVE-2026-121730
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Published at
2026-11-03T23:17:36.590
Last modified
2026-11-03T23:17:36.590

Related Entities (1)

HAS_WEAKNESS (1)

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CVE-2026-121730 (CVSS v3.1 6.5) — Ninja Signal Threat Intelligence | Ninja Signal