Vulnerability-Lookup

GHSA-4X86-C4G3-PX96

Vulnerability from github – Published: 2026-04-22 09:31 – Updated: 2026-08-07 00:31

Details

The Sendmachine for WordPress plugin for WordPress is vulnerable to authorization bypass via the 'manage_admin_requests' function in all versions up to, and including, 1.0.20. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the plugin's SMTP configuration, which can be leveraged to intercept all outbound emails from the site (including password reset emails).

Severity

9.8 (Critical)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-6235"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T09:16:26Z",
    "severity": "CRITICAL"
  },
  "details": "The Sendmachine for WordPress plugin for WordPress is vulnerable to authorization bypass via the \u0027manage_admin_requests\u0027 function in all versions up to, and including, 1.0.20. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the plugin\u0027s SMTP configuration, which can be leveraged to intercept all outbound emails from the site (including password reset emails).",
  "id": "GHSA-4x86-c4g3-px96",
  "modified": "2026-08-07T00:31:04Z",
  "published": "2026-04-22T09:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6235"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/sendmachine/tags/1.0.20/includes/sendmachine_email_manager.php#L39"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/sendmachine/tags/1.0.20/sendmachine_wp_admin.php#L174"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/sendmachine/tags/1.0.20/sendmachine_wp_admin.php#L183"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3511578"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/7889e071-84a8-46ec-abe5-5c98980ce275?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-6235 (GCVE-0-2026-6235)

Vulnerability from cvelistv5 – Published: 2026-04-22 07:45 – Updated: 2026-08-06 16:27

Title

Sendmachine for WordPress <= 1.0.20 - Unauthenticated SMTP Hijack to Privilege Escalation via manage_admin_requests

Summary

Severity

9.8 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-23 13:45 UTC

CWE

CWE-862 - Missing Authorization

Assigner

Wordfence mitre root

References

5 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/sendma…
https://plugins.trac.wordpress.org/browser/sendma…
https://plugins.trac.wordpress.org/browser/sendma…
https://plugins.trac.wordpress.org/changeset/3511578

Impacted products

1 product

Vendor	Product	Version
sendmachine	Sendmachine for WordPress	Affected: 0 , ≤ 1.0.20 (semver)

Credits

Nabil Irawan

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-6235",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-23T13:45:19.678581Z",
                "version": "2.0.3"
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        "providerMetadata": {
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        },
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          "versions": [
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            }
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      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Nabil Irawan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Sendmachine for WordPress plugin for WordPress is vulnerable to authorization bypass via the \u0027manage_admin_requests\u0027 function in all versions up to, and including, 1.0.20. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the plugin\u0027s SMTP configuration, which can be leveraged to intercept all outbound emails from the site (including password reset emails)."
        }
      ],
      "metrics": [
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            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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          "descriptions": [
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      "providerMetadata": {
        "dateUpdated": "2026-08-06T16:27:34.824Z",
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        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/sendmachine/tags/1.0.20/sendmachine_wp_admin.php#L174"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/sendmachine/tags/1.0.20/includes/sendmachine_email_manager.php#L39"
        },
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          "time": "2026-03-10T00:00:00.000Z",
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    "dateReserved": "2026-04-13T16:12:01.215Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.