Vulnerability-Lookup

GHSA-3H85-7292-2F8X

Vulnerability from github – Published: 2026-02-11 09:30 – Updated: 2026-02-11 09:30

Details

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.

Severity ?

8.8 (High)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-1560"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-11T09:15:51Z",
    "severity": "HIGH"
  },
  "details": "The Custom Block Builder \u2013 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 \u0027LazyBlocks_Blocks\u0027 class. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute code on the server.",
  "id": "GHSA-3h85-7292-2f8x",
  "modified": "2026-02-11T09:30:18Z",
  "published": "2026-02-11T09:30:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1560"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-blocks.php#L1637"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-blocks.php#L766"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-rest.php#L88"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3454012"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b1853c88-277b-4955-b042-aeed1cffb49b?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-1560 (GCVE-0-2026-1560)

Vulnerability from cvelistv5 – Published: 2026-02-11 08:26 – Updated: 2026-02-11 15:44

Title

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

Summary

Severity ?

8.8 (High)


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

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

Wordfence

References

URL

Tags

	https://www.wordfence.com/threat-intel/vulnerabil…
	https://plugins.trac.wordpress.org/browser/lazy-b…
	https://plugins.trac.wordpress.org/browser/lazy-b…
	https://plugins.trac.wordpress.org/browser/lazy-b…
	https://plugins.trac.wordpress.org/changeset/3454012/

Impacted products

	Vendor	Product	Version
	nko	Custom Block Builder – Lazy Blocks	Affected: * , ≤ 4.2.0 (semver)

Credits

Youssef Elouaer

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-1560",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-11T15:40:33.786012Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
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    "cna": {
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          "product": "Custom Block Builder \u2013 Lazy Blocks",
          "vendor": "nko",
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              "lessThanOrEqual": "4.2.0",
              "status": "affected",
              "version": "*",
              "versionType": "semver"
            }
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      "credits": [
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          "type": "finder",
          "value": "Youssef Elouaer"
        }
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        {
          "lang": "en",
          "value": "The Custom Block Builder \u2013 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 \u0027LazyBlocks_Blocks\u0027 class. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute code on the server."
        }
      ],
      "metrics": [
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            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
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      ],
      "problemTypes": [
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              "cweId": "CWE-94",
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          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b1853c88-277b-4955-b042-aeed1cffb49b?source=cve"
        },
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          "url": "https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-rest.php#L88"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-blocks.php#L1637"
        },
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          "url": "https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-blocks.php#L766"
        },
        {
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        }
      ],
      "timeline": [
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          "lang": "en",
          "time": "2026-01-29T00:40:11.000+00:00",
          "value": "Vendor Notified"
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          "time": "2026-02-10T00:00:00.000+00:00",
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      ],
      "title": "Custom Block Builder \u2013 Lazy Blocks \u003c= 4.2.0 - Authenticated (Contributor+) Remote Code Execution"
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-3H85-7292-2F8X

CVE-2026-1560 (GCVE-0-2026-1560)

Tags

Sightings

Nomenclature