CVE-2019-9150: Mailvelope prior to 3.3.0 does not require user interaction to import public keys shown on web page

Q: How do I fix CVE-2019-9150?

mailvelope: upgrade to 3.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2019-9150 being exploited?

CVE-2019-9150 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-9150 affect?

CVE-2019-9150 affects mailvelope. Severity is medium (CVSS 5.3). Mailvelope prior to 3.3.0 does not require user interaction to import public keys shown on web page. This functionality can be tricked to either hide a key import from the user or obscure which key was imported.

Q: How urgent is CVE-2019-9150?

Priority 42/100. Remotely exploitable, no login, no user action

This month

MEDIUM 5.3REMOTEUPGRADE

CVE-2019-9150 is a medium-severity flaw (CVSS 5.3) affecting mailvelope. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Mailvelope prior to 3.3.0 does not require user interaction to import public keys shown on web page. This functionality can be tricked to either hide a key import from the user or obscure which key was imported.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-320
Published	2019-07-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mailvelope

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-07-09 21:15 UTCPublished CVE record published
2026-06-17 02:43 UTCUpdated Record last modified

mailvelope mailvelope UPGRADE

Affected: < 3.3.0

Fixed in: 3.3.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mailvelope || rpm -q mailvelope || mailvelope --version

2. UPGRADE to 3.3.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mailvelope

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mailvelope

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-9150?

mailvelope: upgrade to 3.3.0. Exact commands for each OS are on this page.

Is CVE-2019-9150 being exploited?

CVE-2019-9150 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-9150 affect?

CVE-2019-9150 affects mailvelope. Severity is medium (CVSS 5.3). Mailvelope prior to 3.3.0 does not require user interaction to import public keys shown on web page. This functionality can be tricked to either hide a key import from the user or obscure which key was imported.

How urgent is CVE-2019-9150?

Priority 42/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2019-9149 MEDIUM 6.5 UPGRADE Mailvelope prior to 3.3.0 allows private key operations without user interaction via its client-API
CVE-2019-9148 MEDIUM 4.3 UPGRADE Mailvelope prior to 3.3.0 accepts or operates with invalid PGP public keys: Mailvelope allows importing keys t
CVE-2019-9147 MEDIUM 4.3 UPGRADE Mailvelope prior to 3.1.0 is vulnerable to a clickjacking attack against the settings page

References

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