Mailvelope prior to 3.3.0 allows private key operations without user interaction via its…
Priority LOW 31CWE-347Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-347.
Summary
Mailvelope prior to 3.3.0 allows private key operations without user interaction via its client-API. By modifying an URL parameter in Mailvelope, an attacker is able to sign (and encrypt) arbitrary messages with Mailvelope, assuming the private key password is cached. A second vulnerability allows an attacker to decrypt an arbitrary message when the GnuPG backend is used in Mailvelope.
Why it matters now
EPSS 0.0089 59th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
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:mailvelope:mailvelope:*:*:*:*:*:*:*:* | before 3.3.0 | Vulnerable | Mailvelope |
- cpe:2.3:a:mailvelope:mailvelope:*:*:*:*:*:*:*:* Versions before 3.3.0 Vulnerable ·Mailvelope
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-9149
- 2026-10-03 Alias added: GHSA-hjgw-9xvw-334r
References
More Mailvelope vulnerabilities
- TI-2019-06614 Mailvelope prior to 3.3.0 does not require user interaction to import public keys shown… CVSS 3.0MEDIUM 5.3
- TI-2019-06612 Mailvelope prior to 3.3.0 accepts or operates with invalid PGP public keys: Mailvelope… CVSS 3.1MEDIUM 4.3
- TI-2019-06611 Mailvelope prior to 3.1.0 is vulnerable to a clickjacking attack against the settings… CVSS 3.0MEDIUM 4.3
Sources
- CVE-2019-9149 · CVE Program
- CVE-2019-9149 · NVD
- FIRST EPSS
- GHSA-hjgw-9xvw-334r · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences