CVE-2026-121730
mediumemailflare before commit cf31f33 contains a missing authorization vulnerability in POST /api/inbox/compose that allows authenticated members to send mail as an…
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.
CVSS
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-11-03 23:17
Modified: 2026-11-03 23:17
NVD status: Received
Last synced 1 day ago
Verified against the source API 2026-11-03 23:24 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/0xdps/emailflare disclosure@vulncheck.com
- https://github.com/0xdps/emailflare/blob/d448ea205937a5e82683f89013d4c23159da5b7d/services... disclosure@vulncheck.com
- https://github.com/0xdps/emailflare/commit/cf31f33bbb4a324d5353b8a5db0312fedc19618f disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/emailflare-before-commit-cf31f33-missing-authorizatio... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 23:24 UTC · record ↗