XSS in Wordpress

CVE-2019-16217

WordPress before 5.2.3 allows XSS in media uploads because wp_ajax_upload_attachment is mishandled.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.015 (72.2th percentile) — read the EPSS interpretation.

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.

Affected products

Wordpress
Debian Debian_linux — versions 8.0, 9.0, 10.0
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)
cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)
cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
cve@mitre.org (mailing-list, x_refsource_BUGTRAQ, Mailing List, Third Party Advisory)
cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)

Frequently asked questions

What is CVE-2019-16217?: CVE-2019-16217 is a medium-severity vulnerability in Wordpress, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-09-11.
How severe is CVE-2019-16217?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2019-16217 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.