What is CVE-2016-3174?

CVE-2016-3174 is a high-severity vulnerability in Open-Xchange Appsuite, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 7.4/10. Published 2016-12-15.

How severe is CVE-2016-3174?

High severity. CVSS v3 base score is 7.4 out of 10.

Open Redirect in Open-Xchange Appsuite

CVE-2016-3174

An issue was discovered in Open-Xchange OX AppSuite before 7.8.0-rev27. The "defer" servlet offers to redirect a client to a specified URL. Since some checks were missing, arbitrary URLs could be provided as redirection target. Users can be tricked to follow a link to a trustworthy domain but end up at an unexpected service later on. This vulnerability can be used to prepare and enhance phishing attacks.

Vulnerability class: Open Redirect

Published 2016-12-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.010 (60.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Open-Xchange Appsuite

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

packetstormsecurity.com/files/137187/Open-Xchange-OX-AppSuite-7.8.0-XSS-Open-Re… (VDB Entry, Third Party Advisory)
www.securityfocus.com/archive/1/538481/100/0/threaded (mailing-list)

Frequently asked questions

What is CVE-2016-3174?: CVE-2016-3174 is a high-severity vulnerability in Open-Xchange Appsuite, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 7.4/10. Published 2016-12-15.
How severe is CVE-2016-3174?: High severity. CVSS v3 base score is 7.4 out of 10.