CVE-2016-7967: KMail since version 5.3.0 used a QWebEngine based viewer that had JavaScript enabled

Q: How do I fix CVE-2016-7967?

kmail: upgrade to newer than 5.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2016-7967 being exploited?

CVE-2016-7967 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-2016-7967 affect?

CVE-2016-7967 affects kmail. Severity is high (CVSS 8.1). KMail since version 5.3.0 used a QWebEngine based viewer that had JavaScript enabled. Since the generated html is executed in the local file security context by default access to remote and local URLs was enabled.

This month

HIGH 8.1UPGRADE

CVE-2016-7967 is a high-severity flaw (CVSS 8.1) affecting kmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

KMail since version 5.3.0 used a QWebEngine based viewer that had JavaScript enabled. Since the generated html is executed in the local file security context by default access to remote and local URLs was enabled.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-94, CWE-284
Published	2016-12-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: kde

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

Am I affected?

Timeline

2016-12-23 22:59 UTCPublished CVE record published
2026-06-17 00:53 UTCUpdated Record last modified

kde kmail UPGRADE

Affected: <= 5.3.0

Fixed in: newer than 5.3.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 5.3.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kmail

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-2016-7967?

kmail: upgrade to newer than 5.3.0. Exact commands for each OS are on this page.

Is CVE-2016-7967 being exploited?

CVE-2016-7967 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-2016-7967 affect?

CVE-2016-7967 affects kmail. Severity is high (CVSS 8.1). KMail since version 5.3.0 used a QWebEngine based viewer that had JavaScript enabled. Since the generated html is executed in the local file security context by default access to remote and local URLs was enabled.

How urgent is CVE-2016-7967?

Priority 48/100. High severity

Related CVEs

CVE-2021-38373 MEDIUM 5.3 DOWNGRADE In KDE KMail 19.12.3 (aka 5.13.3), the SMTP STARTTLS option is not honored (and cleartext messages are sent) u
CVE-2020-15954 MEDIUM 6.5 DOWNGRADE MITIGATE KDE KMail 19.12.3 (aka 5.13.3) engages in unencrypted POP3 communication during times when the UI indicates th
CVE-2020-11880 MEDIUM 6.5 UPGRADE An issue was discovered in KDE KMail before 19.12.3
CVE-2019-10732 MEDIUM 4.3 DOWNGRADE MITIGATE In KDE KMail 5.2.3, an attacker in possession of S/MIME or PGP encrypted emails can wrap them as sub-parts wit
CVE-2017-9604 HIGH 7.5 UPGRADE UPGRADE KDE kmail before 5.5.2 and messagelib before 5.5.2, as distributed in KDE Applications before 17.04.2, do not

References

← Back to latest CVEs