CVE-2026-87869 json
Filter Everything — WordPress & WooCommerce Filters <= 1.9.6 - Reflected Cross-Site Scripting via Elementor Posts Widget Pagination URL
published 2026-10-10 30 d ago modified 2026-10-13 27 d ago also EUVD-2026-96060
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 12%
- public exploits
- 0
- none known
Summary
The Filter Everything — WordPress & WooCommerce Filters plugin for WordPress is vulnerable to Reflected Cross-Site Scripting in versions up to, and including, 1.9.6. This is due to insufficient input sanitization and output escaping in the flrt_elementor_load_more_anchor() function. The function reads query parameters from $_SERVER['REQUEST_URI'] via getFormActionOrFullPageUrl(true), which URL-decodes them through parse_str() and re-assembles them using build_query() — a WordPress core function that does NOT re-encode values ($urlencode=false). The resulting URL, containing unescaped special characters, is injected into a data-next-page HTML attribute via preg_replace() without esc_attr() or esc_url(). This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a specially crafted link.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 29 d ago
Exploit prediction
0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- stepasyuk Filter Everything — WordPress & WooCommerce Filters
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/7f0f453c-ca01-4ccc-b8c0-4468db40386a?source=cve
- plugins.trac.wordpress.org /browser/filter-everything/tags/1.9.6/src/wpc-third-party.php#L793
- plugins.trac.wordpress.org /browser/filter-everything/tags/1.9.6/src/UrlManager.php#L197
- plugins.trac.wordpress.org /browser/filter-everything/tags/1.9.6/src/wpc-helpers.php#L207
- plugins.trac.wordpress.org /browser/filter-everything/tags/1.9.2.1/src/wpc-third-party.php#L793
- plugins.trac.wordpress.org /browser/filter-everything/tags/1.9.2.1/src/UrlManager.php#L197
- plugins.trac.wordpress.org /browser/filter-everything/tags/1.9.2.1/src/wpc-helpers.php#L207
- plugins.trac.wordpress.org /changeset?reponame=&old=3707235%40filter-everything&new=3707235%40filter-everything
Sources
- CVE List CVE-2026-87869
- NVD CVE-2026-87869
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.