Vulnerability-Lookup

CVE-2026-15420 (GCVE-0-2026-15420)

Vulnerability from cvelistv5 – Published: 2026-07-24 02:31 – Updated: 2026-07-24 22:10

Title

Nexter Blocks <= 5.0.0 - Authenticated (Subscriber+) Path Traversal to Arbitrary CSS/JS File Deletion via 'plus_name' Parameter

Summary

The Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 5.0.0 via the 'plus_name' parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary JS/CSS files on the server, which can lead to denial of service or destruction of critical plugin and theme assets.

Severity

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

Wordfence

References

10 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/the-pl…
https://plugins.trac.wordpress.org/browser/the-pl…
https://plugins.trac.wordpress.org/browser/the-pl…
https://plugins.trac.wordpress.org/browser/the-pl…
https://plugins.trac.wordpress.org/browser/the-pl…
https://plugins.trac.wordpress.org/browser/the-pl…
https://plugins.trac.wordpress.org/browser/the-pl…
https://plugins.trac.wordpress.org/browser/the-pl…
https://plugins.trac.wordpress.org/changeset?repo…

Impacted products

1 product

Vendor	Product	Version
posimyththemes	Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder	Affected: 0 , ≤ 5.0.0 (semver)

Credits

Wordfence PRISM

Show details on NVD website

JSON

To clipboard

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}

GHSA-CG9R-CC95-VM62

Vulnerability from github – Published: 2026-07-24 06:34 – Updated: 2026-07-24 06:34

Details

Severity

4.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-15420"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-24T04:16:51Z",
    "severity": "MODERATE"
  },
  "details": "The Nexter Blocks \u2013 Gutenberg Blocks, Page Builder \u0026 AI Website Builder plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 5.0.0 via the \u0027plus_name\u0027 parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary JS/CSS files on the server, which can lead to denial of service or destruction of critical plugin and theme assets.",
  "id": "GHSA-cg9r-cc95-vm62",
  "modified": "2026-07-24T06:34:11Z",
  "published": "2026-07-24T06:34:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15420"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.14/classes/tp-registered-blocks.php#L2710"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.14/classes/tp-registered-blocks.php#L2862"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.14/classes/tp-registered-blocks.php#L2985"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.14/classes/tp-registered-blocks.php#L3521"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.17/classes/tp-registered-blocks.php#L2710"
    },
    {
      "type": "WEB",
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    },
    {
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    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/85550779-fd46-4130-92f1-b291d4e86b21?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
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}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-15420 (GCVE-0-2026-15420)

GHSA-CG9R-CC95-VM62

Tags

Sightings

Nomenclature