TI-2024-03868 Aliases CVE-2024-4158 GHSA-xwcj-m6m8-mr3g

Blocksy <= 2.0.42 - Authenticated (Contributor+) Stored Cross-Site Scripting

LOW 28CWE-79Published 2024-05-09 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The Blocksy theme for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘tagName’ parameter in versions up to, and including, 2.0.42 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0034 27th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
creativethemeshq	Blocksy	up to 2.0.42	—	No fix listed	CNA

Blocksy Vendorcreativethemeshq Affected up to 2.0.42 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:creativethemes:blocksy::::::wordpress::*	before 2.0.43	Vulnerable	creativethemeshq

cpe:2.3:a:creativethemes:blocksy:*:*:*:*:*:wordpress:*:* Versions before 2.0.43 Vulnerable ·creativethemeshq

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-4158
2026-10-03 Alias added: GHSA-xwcj-m6m8-mr3g

References

Patch 1

https://themes.trac.wordpress.org/changeset/226440/blocksy

Advisory 1

https://www.wordfence.com/threat-intel/vulnerabilities/id/22d1ccf3-ac1a-4dfc-81c3-b8eb88795bc1?source=cve

TI-2024-24973 WordPress Blocksy theme <= 1.9.5 - Cross Site Request Forgery (CSRF) vulnerability CVSS 3.1HIGH 8.8
TI-2024-20754 WordPress Blocksy theme <= 2.0.22 - Cross Site Request Forgery (CSRF) vulnerability CVSS 3.1HIGH 8.8
TI-2024-21828 WordPress Blocksy theme <= 2.0.33 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5
TI-2024-16385 WordPress Blocksy theme <= 2.0.19 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5
TI-2024-03493 Blocksy <= 2.0.39 - Authenticated (Contributor+) Stored Cross-Site Scripting via About Me block CVSS 3.1MEDIUM 6.4
TI-2024-10583 Blocksy <= 2.0.77 - Authenticated (Contributor+) Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.4

See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences