What is CVE-2016-4803?

CVE-2016-4803 is a high-severity vulnerability in Dotcms. CVSS score: 7.5/10. Published 2016-06-30.

How severe is CVE-2016-4803?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Dotcms

CVE-2016-4803

CRLF injection vulnerability in the send email functionality in dotCMS before 3.3.2 allows remote attackers to inject arbitrary email headers via CRLF sequences in the subject.

Published 2016-06-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.022 (81.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Dotcms

References

dotcms.com/docs/latest/change-log (Vendor Advisory)
security.elarlang.eu/cve-2016-4803-dotcms-email-header-injection-vulnerability-… (Exploit)
www.securityfocus.com/bid/91529 (vdb-entry)
seclists.org/fulldisclosure/2016/May/69 (mailing-list, Exploit)

Frequently asked questions

What is CVE-2016-4803?: CVE-2016-4803 is a high-severity vulnerability in Dotcms. CVSS score: 7.5/10. Published 2016-06-30.
How severe is CVE-2016-4803?: High severity. CVSS v3 base score is 7.5 out of 10.