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Vulnerability record · CVE-2016-7966 · published 23 December 2016

CVE-2016-7966: Kde kmail code injection vulnerability

Kde · Kmail

Through a malicious URL that contained a quote character it was possible to inject HTML code in KMail's plaintext viewer. Due to the parser used on the URL it was not possible to include the equal sign (=) or a space into the injected HTML, which greatly reduces the available HTML functionality. Although it is possible to include an HTML comment indicator to hide content.

7.3 CVSS 3.0 High EPSS 2.3% · top 16.1% CWE-94 · Code injection
7.3CVSS 3.0 base score, v2 7.5
2.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

Through a malicious URL that contained a quote character it was possible to inject HTML code in KMail's plaintext viewer. Due to the parser used on the URL it was not possible to include the equal sign (=) or a space into the injected HTML, which greatly reduces the available HTML functionality. Although it is possible to include an HTML comment indicator to hide content.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-updates/2016-10/msg00065.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3697 Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/05/1 Third Party Advisory
http://www.securityfocus.com/bid/93360 Third Party AdvisoryVDB Entry
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNMM5TVPTJQFPJ3YDF4DPXD
http://lists.opensuse.org/opensuse-updates/2016-10/msg00065.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3697 Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/05/1 Third Party Advisory
http://www.securityfocus.com/bid/93360 Third Party AdvisoryVDB Entry
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNMM5TVPTJQFPJ3YDF4DPXD

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Source: NIST National Vulnerability Database (record CVE-2016-7966), CISA KEV, FIRST EPSS (scores of 2026-11-14). This page is refreshed as NVD updates the record.