What is CVE-2016-10999?

CVE-2016-10999 is a medium-severity vulnerability in Momizat Goodnews, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-09-20.

How severe is CVE-2016-10999?

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

Is CVE-2016-10999 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Momizat Goodnews

CVE-2016-10999

The Goodnews theme through 2016-02-28 for WordPress has XSS via the s parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-09-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.5% 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

Momizat Goodnews — versions 2016-02-28

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

www.vulnerability-lab.com/get_content.php (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2016-10999?: CVE-2016-10999 is a medium-severity vulnerability in Momizat Goodnews, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-09-20.
How severe is CVE-2016-10999?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2016-10999 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.