CVE-2026-0609

Logo Slider <= 4.9.0 - Authenticated (Author+) Stored Cross-Site Scripting via 'logo-slider' Shortcode

2026-03-20 15:20

Strategic Overview

Status: Unpatched
Affected Plugin: Logo Slider WP – Responsive Logo Carousel, Logo Gallery & Logo Showcase
Affected Version: <= 4.9.0
CVSS: 6.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2026-0609

View all Logo Slider WP – Responsive Logo Carousel, Logo Gallery & Logo Showcase vulnerabilities

At a glance

CVE-2026-0609 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Logo Slider WP WordPress plugin, affecting versions <= 4.9.0. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Author level or above. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed March 2026, reported by Muhammad Yudha - DJ.

Vulnerability Overview

The Logo Slider – Logo Carousel, Logo Showcase & Client Logo Slider Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the image alt text in all versions up to, and including, 4.9.0 due to insufficient input sanitization and output escaping in the 'logo-slider' shortcode. This makes it possible for authenticated attackers, with author level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

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

Logo Slider WP <= 4.9.0 carries this weakness at logo-slider, and reaching it takes an account at Author 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. No fixed build of this plugin is recorded for Logo Slider WP yet, so installs running <= 4.9.0 stay exposed until the vendor ships one.

Remediation

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

How does WordSec protect against this?

An attacker needs Author 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. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-0609 https://www.wordfence.com/threat-intel/vulnerabilities/id/b94f388a-c4af-4d3a-bd41-9b2d5d990672 https://nvd.nist.gov/vuln/detail/CVE-2026-0609

Related records

Same weakness class

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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