What is CVE-2017-6814?

CVE-2017-6814 is a medium-severity vulnerability in WordPress, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2017-03-12.

How severe is CVE-2017-6814?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2017-6814 known to be exploited?

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

XSS in WordPress

CVE-2017-6814

In WordPress before 4.7.3, there is authenticated Cross-Site Scripting (XSS) via Media File Metadata. This is demonstrated by both (1) mishandling of the playlist shortcode in the wp_playlist_shortcode function in wp-includes/media.php and (2) mishandling of meta information in the renderTracks function in wp-includes/js/mediaelement/wp-playlist.js.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2017-03-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.029 (86.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.028 · newest: 0.029 · change: +0.000

Affected products

WordPress
Debian Linux — versions 8.0, 9.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

github.com/WordPress/WordPress/commit/28f838ca3ee205b6f39cd2bf23eb4e5f52796bd7 (Patch, Third Party Advisory, Issue Tracking)
www.securitytracker.com/id/1037959 (VDB Entry, Third Party Advisory, vdb-entry)
www.debian.org/security/2017/dsa-3815 (vendor-advisory, Third Party Advisory)
wpvulndb.com/vulnerabilities/8765 (Patch, Third Party Advisory)
www.securityfocus.com/bid/96601 (VDB Entry, Third Party Advisory, vdb-entry)
sumofpwn.nl/advisory/2016/wordpress_audio_playlist_functionality_is_affected_by… (Exploit, Third Party Advisory)
wordpress.org/news/2017/03/wordpress-4-7-3-security-and-maintenance-release/ (Patch, Release Notes, Vendor Advisory)
openwall.com/lists/oss-security/2017/03/06/8 (Exploit, Mailing List, Third Party Advisory)
codex.wordpress.org/Version_4.7.3 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2017-6814?: CVE-2017-6814 is a medium-severity vulnerability in WordPress, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2017-03-12.
How severe is CVE-2017-6814?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2017-6814 known to be exploited?: 18 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.