Stored Cross-Site Scripting Vulnerability in CM CSS Columns Plugin for WordPress
CVE-2026-1098

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Cm Css Columns
Vendor
CVE Published:
24 January 2026

What is CVE-2026-1098?

The CM CSS Columns plugin for WordPress is susceptible to Stored Cross-Site Scripting due to insufficient sanitization and escaping of user input on the 'tag' shortcode attribute. This vulnerability can be exploited by authenticated users with Contributor-level access and higher, allowing them to inject arbitrary scripts into pages. These scripts will execute whenever a user accesses a page containing the injected content, posing a risk to site security and user data.

Affected Version(s)

CM CSS Columns 0 <= 1.2.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/cm-css-columns...
https://plugins.trac.wordpress.org/browser/cm-css-columns...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Youcef Hamdani
.