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Fencer Intel
medium 4.8

CVE-2019-16524 json

The easy-fancybox plugin before 1.8.18 for WordPress (aka Easy FancyBox) is susceptible to Stored XSS in the Settings Menu inc/class-easyfa…

published 7y ago modified 4mo ago also EUVD-2019-7201

cvss
4.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

The easy-fancybox plugin before 1.8.18 for WordPress (aka Easy FancyBox) is susceptible to Stored XSS in the Settings Menu inc/class-easyfancybox.php due to improper encoding of arbitrarily submitted settings parameters. This occurs because there is no inline styles output filter.

Patch / fix

  • status301 easy_fancybox 1.8.18

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Exploit prediction

1.02% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/sbaresearch/advisories/tree/public/2019/SBA-ADV-20190911-01_Easy_FancyBox_WP_Plugin_Stored_XSS referenced PoC, tagged "exploit" by a source, unverified
  • wpvulndb.com https://wpvulndb.com/vulnerabilities/9891 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/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 Intel 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.