An issue was discovered in Bloop Airmail 3 3.5.9 for macOS.
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-287.
Summary
An issue was discovered in Bloop Airmail 3 3.5.9 for macOS. It registers and uses the airmail:// URL scheme. The "send" command in the URL scheme allows an external application to send arbitrary emails from an active account without authentication. The handler has no restriction on who can use its functionality. The handler can be invoked using any method that invokes the URL handler such as a hyperlink in an email. The user is not prompted when the handler processes the "send" command, thus leading to automatic transmission of an attacker crafted email from the target account.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:airmailapp:airmail:3.3.5.9:*:*:*:*:*:*:* | 3.3.5.9 | Vulnerable | Airmailapp |
- cpe:2.3:a:airmailapp:airmail:3.3.5.9:*:*:*:*:*:*:* Versions 3.3.5.9 Vulnerable ·Airmailapp
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-15667
- 2026-10-03 Alias added: GHSA-fc42-9767-vr66
References
Sources
- CVE-2018-15667 · CVE Program
- CVE-2018-15667 · NVD
- FIRST EPSS
- GHSA-fc42-9767-vr66 · GitHub Advisory Database · CC BY 4.0
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