WordPress Ivory Search plugin <= 4.6.6 - Reflected Cross-Site Scripting (XSS) vulnerability

published 2021-10-21 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-23445

cvss: 4.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits: 0; none known

Reflected Cross-Site Scripting (XSS) vulnerability in WordPress Ivory Search plugin (versions <= 4.6.6). Vulnerable parameter: &post.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 19 mo ago (2025-03-28)

Exploit prediction

0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

Ivory Search Ivory Search (WordPress plugin)

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

Technology feeds

WordPress rss critical rss

References

wordpress.org /plugins/add-search-to-menu/#developers
product, third-party-advisory
patchstack.com /database/vulnerability/add-search-to-menu/wordpress-ivory-search-plugin-4-6-6-reflected-cross-site-scripting-
third-party-advisory

Sources

CVE List CVE-2021-36869
NVD CVE-2021-36869

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.

Summary