8.8High

CVE-2026-1560Custom Block Builder – Lazy Blocks <= 4.2.0 - Authenticated (Contributor+) Remote Code Execution

nko Custom Block Builder – Lazy Blocks Published: 2026-02-11 11:26 (9 months ago)

Description

The Custom Block Builder – Lazy Blocks plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4.2.0 via multiple functions in the 'LazyBlocks_Blocks' class. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute code on the server.

Weakness (CWE): CWE-94

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
nko	Custom Block Builder – Lazy Blocks	≤ 4.2.0

References and patches

CVSS score

8.8High

Source: Wordfence · CVSS 3.1

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

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

All scores (2)

cna	CVSS 3.1	8.8High
security@wordfence.com	CVSS 3.1	8.8High

EPSS (chance of exploitation in 30 days)

10.39%

higher than 96% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: no
Technical impact: total

Timeline

ID reserved2026-01-28
Published2026-02-11 11:26
Reached IP-DB2026-10-24 23:42
Last updated2026-06-17 13:16

Assigned by (CNA): Wordfence
NVD status: Deferred

View at source: CVE.org · NVD

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