What is CVE-2017-5475?

CVE-2017-5475 is a high-severity vulnerability in S9y Serendipity, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2017-01-14.

How severe is CVE-2017-5475?

High severity. CVSS v3 base score is 8.8 out of 10.

CSRF in S9y Serendipity

CVE-2017-5475

comment.php in Serendipity through 2.0.5 allows CSRF in deleting any comments.

Vulnerability class: CSRF (Cross-Site Request Forgery)

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

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (44.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

S9y Serendipity

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

github.com/s9y/Serendipity/issues/439 (Issue Tracking)
www.securityfocus.com/bid/95656 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-5475?: CVE-2017-5475 is a high-severity vulnerability in S9y Serendipity, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2017-01-14.
How severe is CVE-2017-5475?: High severity. CVSS v3 base score is 8.8 out of 10.