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Fencer Vulns
medium 5.4

CVE-2019-17674 json

WordPress before 5.2.4 is vulnerable to stored XSS (cross-site scripting) via the Customizer.

published 2019-10-17 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7979

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

WordPress before 5.2.4 is vulnerable to stored XSS (cross-site scripting) via the Customizer.

Patch / fix

  • wordpress wordpress 5.2.4
  • wordpress Debian 14, Debian 13, Debian 12 5.2.4+dfsg1-1

debian advisories DEBIAN-CVE-2019-17674

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-17674 updated cvss 5.4

wordpress: stored XSS via the Customizer

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.59% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.