Vulnerability · Published Nov 3, 2026 · Assigned by VulnCheck
CVE-2026-121729emailflare before commit cf31f33 Missing Authorization via /api/keys Routes
High 8.3
In plain English
A high-severity missing authorization in emailflare from 0xdps. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).
Severity (CVSS 3.1)8.3High
Exploit odds (30 days)0.2%top 83.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
emailflare before commit cf31f33 contains a missing authorization vulnerability in the inbox service /api/keys routes that allows any authenticated member to list, create and revoke API keys. Attackers can mint a global live API key accepted by /v1/send to send mail from any domain, or revoke existing keys to disable integrations.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| 0xdps | emailflare | 0 – before cf31f33bbb4a324d5353b8a5db0312fedc19618f |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
References
- Patch Commit patch
- https://github.com/0xdps/emailflare product
- https://github.com/0xdps/emailflare/blob/d448ea205937a5e82683f89013d4c23159da5b7d/services/inbox-worker/src/routes/keys.ts technical-description
- VulnCheck Advisory: emailflare before commit cf31f33 Missing Authorization via /api/keys Routes third-party-advisory