What is CVE-2017-5474?

CVE-2017-5474 is a medium-severity vulnerability in S9y Serendipity, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2017-01-14.

How severe is CVE-2017-5474?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in S9y Serendipity

CVE-2017-5474

Open redirect vulnerability in comment.php in Serendipity through 2.0.5 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the HTTP Referer header.

Vulnerability class: Open Redirect

Published 2017-01-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

S9y Serendipity

Weakness classification (CWE)

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

References

github.com/s9y/Serendipity/commit/6285933470bab2923e4573b5d54ba9a32629b0cd (Patch, Issue Tracking)
www.securityfocus.com/bid/95652 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-5474?: CVE-2017-5474 is a medium-severity vulnerability in S9y Serendipity, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2017-01-14.
How severe is CVE-2017-5474?: Medium severity. CVSS v3 base score is 6.1 out of 10.