Is CVE-2026-3618 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-3618 being exploited in the wild.

How severe is CVE-2026-3618?

Medium severity, with a CVSS score of 6.4, published 8 April 2026.

Which products and versions are affected?

BestWebSoft Columns by BestWebSoft up to and including 1.0.3.

Is there a fix for CVE-2026-3618?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-3618 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-3618?

Check whether you run BestWebSoft Columns by BestWebSoft at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-3618: BestWebSoft Columns Stored XSS in print_clmns shortcode

CVE-2026-3618 · Severity: medium · CVSS 6.4 · Published 2026-04-08

The Columns by BestWebSoft plugin for WordPress, which allows users to add multi-column layouts to posts and pages, contains a security flaw. This vulnerability allows users with contributor-level access or higher to inject malicious scripts into website pages. When other users or administrators visit these pages, the scripts can execute, potentially leading to unauthorized actions or data theft.

Vendors: BestWebSoft.

Quick answers

Is CVE-2026-3618 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-3618 being exploited in the wild.
How severe is CVE-2026-3618?: Medium severity, with a CVSS score of 6.4, published 8 April 2026.
Which products and versions are affected?: BestWebSoft Columns by BestWebSoft up to and including 1.0.3.
Is there a fix for CVE-2026-3618?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-3618 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-3618?: Check whether you run BestWebSoft Columns by BestWebSoft at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The Columns by BestWebSoft plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping on the 'id' attribute of the [print_clmns] shortcode. While the plugin uses %d to cast the 'id' to an integer for SQL queries, the original unsanitized string is directly embedded into HTML div attributes and inline CSS blocks. An authenticated attacker with Contributor-level access or higher can exploit this to inject arbitrary web scripts. A precondition for successful exploitation is that at least one column must have been previously created by an administrator so that the SQL query returns a result, triggering the vulnerable output branch. All versions up to and including 1.0.3 are affected.

Affected products

BestWebSoft (bestweblayout) Columns by BestWebSoft – Additional Columns Plugin for Posts Pages and Widgets up to and including 1.0.3

Timeline

2026-04-08: disclosed: Initial disclosure date
2026-04-08: advisory: Wordfence published advisory

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.