CVE-2026-11900 (GCVE-0-2026-11900)
Vulnerability from cvelistv5
Published
2026-07-03 07:53
Modified
2026-07-07 17:01
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Summary
The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 2.8.16 via the 'data' attribute of the [adinserter] shortcode. This is due to the replace_ai_tags() function processing a {reusable-block-N} tag pattern that calls get_post_field('post_content', N) without verifying the requesting user's capability with current_user_can('read_post'), without restricting the post type to 'wp_block', and without checking the post status. This makes it possible for authenticated attackers, with Contributor-level access and above, to read the full content of arbitrary posts including Private, Draft, Pending, Trashed, and password-protected posts owned by other users, by placing the shortcode in a post they own and previewing it.
References
Impacted products
Vendor Product Version
spacetime Ad Inserter – Ad Manager & AdSense Ads Version: 0   ≤ 2.8.16
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-11900",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-06T18:04:48.926021Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-07T17:01:17.535Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Ad Inserter \u2013 Ad Manager \u0026 AdSense Ads",
          "vendor": "spacetime",
          "versions": [
            {
              "lessThanOrEqual": "2.8.16",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "nightward"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Ad Inserter \u2013 Ad Manager \u0026 AdSense Ads plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 2.8.16 via the \u0027data\u0027 attribute of the [adinserter] shortcode. This is due to the replace_ai_tags() function processing a {reusable-block-N} tag pattern that calls get_post_field(\u0027post_content\u0027, N) without verifying the requesting user\u0027s capability with current_user_can(\u0027read_post\u0027), without restricting the post type to \u0027wp_block\u0027, and without checking the post status. This makes it possible for authenticated attackers, with Contributor-level access and above, to read the full content of arbitrary posts including Private, Draft, Pending, Trashed, and password-protected posts owned by other users, by placing the shortcode in a post they own and previewing it."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639 Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T07:53:08.023Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/20f0e9ae-786b-4ba8-a6d5-92bf31ebc2c7?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.16/ad-inserter.php#L13083"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.16/ad-inserter.php#L10569"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.16/ad-inserter.php#L10818"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.16/ad-inserter.php#L2101"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.13/ad-inserter.php#L13083"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.13/ad-inserter.php#L10569"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.13/ad-inserter.php#L10818"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.13/ad-inserter.php#L2101"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3591792%40ad-inserter\u0026new=3591792%40ad-inserter\u0026sfp_email=\u0026sfph_mail="
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-06-10T15:58:36.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-07-02T19:01:12.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Ad Inserter \u003c= 2.8.16 - Insecure Direct Object Reference to Authenticated (Contributor+) Arbitrary Post Content Disclosure via \u0027data\u0027 Shortcode Attribute"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-11900",
    "datePublished": "2026-07-03T07:53:08.023Z",
    "dateReserved": "2026-06-10T15:43:26.797Z",
    "dateUpdated": "2026-07-07T17:01:17.535Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-11900\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-07-06T18:04:48.926021Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-07-06T18:04:50.136Z\"}}], \"cna\": {\"title\": \"Ad Inserter \u003c= 2.8.16 - Insecure Direct Object Reference to Authenticated (Contributor+) Arbitrary Post Content Disclosure via \u0027data\u0027 Shortcode Attribute\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"nightward\"}], \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 4.3, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N\"}}], \"affected\": [{\"vendor\": \"spacetime\", \"product\": \"Ad Inserter \\u2013 Ad Manager \u0026 AdSense Ads\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"2.8.16\"}], \"defaultStatus\": \"unaffected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-06-10T15:58:36.000Z\", \"value\": \"Vendor Notified\"}, {\"lang\": \"en\", \"time\": \"2026-07-02T19:01:12.000Z\", \"value\": \"Disclosed\"}], \"references\": [{\"url\": \"https://www.wordfence.com/threat-intel/vulnerabilities/id/20f0e9ae-786b-4ba8-a6d5-92bf31ebc2c7?source=cve\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.16/ad-inserter.php#L13083\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.16/ad-inserter.php#L10569\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.16/ad-inserter.php#L10818\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.16/ad-inserter.php#L2101\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.13/ad-inserter.php#L13083\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.13/ad-inserter.php#L10569\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.13/ad-inserter.php#L10818\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.13/ad-inserter.php#L2101\"}, {\"url\": \"https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3591792%40ad-inserter\u0026new=3591792%40ad-inserter\u0026sfp_email=\u0026sfph_mail=\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"The Ad Inserter \\u2013 Ad Manager \u0026 AdSense Ads plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 2.8.16 via the \u0027data\u0027 attribute of the [adinserter] shortcode. This is due to the replace_ai_tags() function processing a {reusable-block-N} tag pattern that calls get_post_field(\u0027post_content\u0027, N) without verifying the requesting user\u0027s capability with current_user_can(\u0027read_post\u0027), without restricting the post type to \u0027wp_block\u0027, and without checking the post status. This makes it possible for authenticated attackers, with Contributor-level access and above, to read the full content of arbitrary posts including Private, Draft, Pending, Trashed, and password-protected posts owned by other users, by placing the shortcode in a post they own and previewing it.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-639\", \"description\": \"CWE-639 Authorization Bypass Through User-Controlled Key\"}]}], \"providerMetadata\": {\"orgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"shortName\": \"Wordfence\", \"dateUpdated\": \"2026-07-03T07:53:08.023Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-11900\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-07T17:01:17.535Z\", \"dateReserved\": \"2026-06-10T15:43:26.797Z\", \"assignerOrgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"datePublished\": \"2026-07-03T07:53:08.023Z\", \"assignerShortName\": \"Wordfence\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.