What is CVE-2019-11870?

CVE-2019-11870 is a medium-severity vulnerability in S9y Serendipity, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-05-09.

How severe is CVE-2019-11870?

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

XSS in S9y Serendipity

CVE-2019-11870

Serendipity before 2.1.5 has XSS via EXIF data that is mishandled in the templates/2k11/admin/media_choose.tpl Editor Preview feature or the templates/2k11/admin/media_items.tpl Media Library feature.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-05-09 · 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: 0.013 (69.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

S9y Serendipity

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

blog.s9y.org/archives/282-Serendipity-2.1.5-released.html (Release Notes, Vendor Advisory)
www.openwall.com/lists/oss-security/2019/05/03/3 (Mailing List, Third Party Advisory)
github.com/s9y/Serendipity/issues/598 (Third Party Advisory)
www.openwall.com/lists/oss-security/2019/05/10/1 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2019-11870?: CVE-2019-11870 is a medium-severity vulnerability in S9y Serendipity, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-05-09.
How severe is CVE-2019-11870?: Medium severity. CVSS v3 base score is 6.1 out of 10.