Stored Cross-Site Scripting Vulnerability in Blocksy Theme by WordPress
CVE-2026-2583

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Blocksy
Vendor
CVE Published:
2 March 2026

What is CVE-2026-2583?

The Blocksy theme for WordPress allows authenticated attackers with Contributor-level access and above to exploit a Stored Cross-Site Scripting vulnerability through the blocksy_meta metadata fields. This occurs due to inadequate input sanitization and output escaping, enabling attackers to inject arbitrary web scripts into pages. When users access these compromised pages, the injected scripts are executed, potentially leading to real-time exploitation of user data and session hijacking.

Affected Version(s)

Blocksy 0 <= 2.1.30

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://themes.trac.wordpress.org/changeset/315531/

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

Quốc Huy
.