Vulnerability-Lookup

CVE-2026-5060 (GCVE-0-2026-5060)

Vulnerability from cvelistv5 – Published: 2026-07-29 09:31 – Updated: 2026-07-29 15:07

Title

MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.7.14 - Insecure Direct Object Reference to Authenticated (Instructor+) Arbitrary Attachment Deletion

Summary

The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.14. This is due to the `stm_lms_delete_cover()` function lacking ownership validation on the `file_id` parameter before passing it to `wp_delete_attachment()`. This makes it possible for authenticated attackers, with Instructor-level access and above, to delete arbitrary attachments belonging to any user by enumerating sequential attachment IDs.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

Wordfence

References

4 references

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

Impacted products

1 product

Vendor	Product	Version
stylemix	MasterStudy LMS WordPress Plugin – for Online Courses and Education	Affected: 0 , ≤ 3.7.23 (semver)

Credits

Md. Moniruzzaman Prodhan (NomanProdhan)

Show details on NVD website

JSON

To clipboard

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GHSA-3WR4-2WWF-JJXW

Vulnerability from github – Published: 2026-07-29 12:31 – Updated: 2026-07-29 12:31

Details

The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.14. This is due to the stm_lms_delete_cover() function lacking ownership validation on the file_id parameter before passing it to wp_delete_attachment(). This makes it possible for authenticated attackers, with Instructor-level access and above, to delete arbitrary attachments belonging to any user by enumerating sequential attachment IDs.

Severity

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-5060"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-29T11:16:50Z",
    "severity": "MODERATE"
  },
  "details": "The MasterStudy LMS WordPress Plugin \u2013 for Online Courses and Education plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.14. This is due to the `stm_lms_delete_cover()` function lacking ownership validation on the `file_id` parameter before passing it to `wp_delete_attachment()`. This makes it possible for authenticated attackers, with Instructor-level access and above, to delete arbitrary attachments belonging to any user by enumerating sequential attachment IDs.",
  "id": "GHSA-3wr4-2wwf-jjxw",
  "modified": "2026-07-29T12:31:23Z",
  "published": "2026-07-29T12:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5060"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/masterstudy-lms-learning-management-system/tags/3.7.14/_core/lms/classes/user.php#L2093"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/masterstudy-lms-learning-management-system/tags/3.7.14/_core/lms/classes/user.php#L2107"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3501788%40masterstudy-lms-learning-management-system%2Ftrunk\u0026old=3496678%40masterstudy-lms-learning-management-system%2Ftrunk\u0026sfp_email=\u0026sfph_mail="
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/de11c9ad-0b9f-4934-8dc9-dc324d77d702?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:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

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-2026-5060 (GCVE-0-2026-5060)

GHSA-3WR4-2WWF-JJXW

Tags

Sightings

Nomenclature