CVE-2026-28179

FiboSearch – Ajax Search for WooCommerce <= 1.33.0 - Authenticated (Shop manager+) Stored Cross-Site Scripting

2026-08-05 00:00

Strategic Overview

Status: Patched in 1.34.0
Affected Plugin: FiboSearch – Ajax Search for WooCommerce
Affected Version: <= 1.33.0
CVSS: 4.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2026-28179

View all FiboSearch – Ajax Search for WooCommerce vulnerabilities

At a glance

CVE-2026-28179 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the FiboSearch WordPress plugin, affecting versions <= 1.33.0. It carries a CVSS score of 4.4 (reachable over the network). Exploitation requires an authenticated account at Shop manager level or above. The issue is fixed in version 1.34.0; sites on affected versions should update now. Disclosed August 2026, reported by Ananda Dhakal.

Vulnerability Overview

The FiboSearch – Ajax Search for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.33.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with shop manager-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in FiboSearch <= 1.33.0 takes an account at Shop manager level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For FiboSearch the fix is 1.34.0: builds <= 1.33.0 are affected, anything from 1.34.0 onward is not.

Remediation

Update to version 1.34.0, or a newer patched version

How does WordSec protect against this?

An attacker needs Shop manager access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: FiboSearch 1.34.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-28179 https://www.wordfence.com/threat-intel/vulnerabilities/id/79e20ca1-9325-43af-b5c6-a66a7a15605a https://nvd.nist.gov/vuln/detail/CVE-2026-28179

Related records

Same weakness class

Other vulnerabilities in FiboSearch – Ajax Search for WooCommerce

CVSS Vector

4.4

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredHigh
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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