Security readout for executives and security teams
Plain-English summary
CVE-2026-1560 affects the WordPress Lazy Blocks plugin. A logged-in user with Contributor-level access or higher could execute code on the web server. That can lead to full site compromise, data theft, defacement, or service disruption. Public sources do not show confirmed active exploitation.
Executive priority
Treat as urgent for WordPress sites using Lazy Blocks, especially public sites with multiple content contributors. Prioritize patching or disabling the plugin because successful abuse can execute server-side code.
Technical view
Custom Block Builder – Lazy Blocks versions up to and including 4.2.0 are vulnerable to authenticated remote code execution via functions in the LazyBlocks_Blocks class. CVSS 8.8 reflects network access, low complexity, low privileges, no user interaction, and high confidentiality, integrity, and availability impact. CWE-94 applies.
Likely exposure
WordPress sites running Lazy Blocks 4.2.0 or earlier are exposed if untrusted or compromised Contributor-level accounts exist. Sites allowing user-generated content, many editors, or weak account controls have higher practical risk.
Exploitation context
The attacker must already authenticate with Contributor-level privileges or higher. No cited source confirms exploitation in the wild, and the CVE is not listed as KEV in the provided bundle.
Researcher notes
The source bundle cites vulnerable code locations and a WordPress.org changeset, but does not clearly name the fixed release. Avoid assuming exploitation status. Validate exposure through installed plugin version and role membership, then track vendor release notes.
Mitigation direction
- Update Lazy Blocks to a version newer than 4.2.0 if available.
- If no safe update is available, disable or remove the plugin.
- Restrict Contributor and higher accounts to trusted users only.
- Review vendor and Wordfence guidance for confirmed fixed-version details.
- Enforce strong authentication and remove unused WordPress accounts.
Validation and detection
- Inventory all WordPress sites using the Lazy Blocks plugin.
- Confirm plugin version; flag 4.2.0 and earlier.
- Review users with Contributor, Author, Editor, Administrator, or custom equivalent roles.
- Check web server and WordPress logs for suspicious authenticated activity.
- Verify remediation by confirming the installed plugin version after update.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-94: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-1560 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b1853c88-277b-4955-b042-aeed1cffb49b?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-rest.php#L88CVE reference
- https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-blocks.php#L1637CVE reference
- https://plugins.trac.wordpress.org/changeset/3454012/CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Control of Generation of Code ('Code Injection')
Improper Control of Generation of Code ('Code Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.