CVE-2019-16524 — The easy-fancybox plugin before 1

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

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-09-26T15:45:33.000Z
• Last modified: 2024-08-05T01:17:40.246Z

09References

• wordpress.org — https://wordpress.org/plugins/easy-fancybox/#developers
• github.com — https://github.com/sbaresearch/advisories/tree/public/2019/SBA-ADV-20190911-01_E…
• wpvulndb.com — https://wpvulndb.com/vulnerabilities/9891