KMail since version 5.3.0 used a QWebEngine based viewer that had JavaScript enabled.

published 2016-12-23 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-8816

cvss: 6.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits: 0; none known

KMail since version 5.3.0 used a QWebEngine based viewer that had JavaScript enabled. HTML Mail contents were not sanitized for JavaScript and included code was executed.

Patch / fix

distros 1

messagelib Arch Linux 16.08.1-2

arch linux advisories AVG-44

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-7968 updated 2026-11-05 cvss 4.3

kdepim: JavaScript execution in HTML Mails

Red Hat Enterprise Linux 5 kdepim Red Hat Enterprise Linux 6 kdepim, kdepim-libs, kdepim3-libs Red Hat Enterprise Linux 7 kdepim, kdepim-libs
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.17% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-94 Improper Control of Generation of Code

References

kde.org /info/security/advisory-20161006-3.txt
vendor-advisory
securityfocus.com /bid/93360
vdb-entry, third-party-advisory
openwall.com /lists/oss-security/2016/10/05/1
mailing-list, third-party-advisory

Sources

CVE List CVE-2016-7968
NVD CVE-2016-7968

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary