CVE-2026-121729
CVE-2026-121729
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.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- github.com/0xdps/emailflare/commit/cf31f33bbb4a324d5353b8a5db0312fedc19618f (patch)
- github.com/0xdps/emailflare (product)
- github.com/0xdps/emailflare/blob/d448ea205937a5e82683f89013d4c23159da5b7d/servi… (technical-description)
- www.vulncheck.com/advisories/emailflare-before-commit-cf31f33-missing-authoriza… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-121729?
- CVE-2026-121729 is a high-severity vulnerability, classified under Missing Authorization. CVSS score: 8.3/10. Published 2026-11-03.
- How severe is CVE-2026-121729?
- High severity. CVSS v3 base score is 8.3 out of 10.