Vulnerability-Lookup

GHSA-H3RM-XCQX-MV7Q

Vulnerability from github – Published: 2026-04-30 15:30 – Updated: 2026-04-30 15:30

Details

The Otter Blocks plugin for WordPress is vulnerable to Purchase Verification Bypass in all versions up to, and including, 3.1.4. This is due to the 'get_customer_data' method relying on an unsigned 'o_stripe_data' cookie to determine Stripe product ownership for unauthenticated users. The 'check_purchase' method trusts this cookie data without performing server-side verification against the Stripe API for one-time 'payment' mode purchases. This makes it possible for unauthenticated attackers to bypass Stripe purchase-gated content visibility conditions by forging the 'o_stripe_data' cookie with a target product ID, which is publicly exposed in the checkout block's HTML source.

Severity ?

7.5 (High)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-2892"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-285"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-30T14:16:29Z",
    "severity": "HIGH"
  },
  "details": "The Otter Blocks plugin for WordPress is vulnerable to Purchase Verification Bypass in all versions up to, and including, 3.1.4. This is due to the \u0027get_customer_data\u0027 method relying on an unsigned \u0027o_stripe_data\u0027 cookie to determine Stripe product ownership for unauthenticated users. The \u0027check_purchase\u0027 method trusts this cookie data without performing server-side verification against the Stripe API for one-time \u0027payment\u0027 mode purchases. This makes it possible for unauthenticated attackers to bypass Stripe purchase-gated content visibility conditions by forging the \u0027o_stripe_data\u0027 cookie with a target product ID, which is publicly exposed in the checkout block\u0027s HTML source.",
  "id": "GHSA-h3rm-xcqx-mv7q",
  "modified": "2026-04-30T15:30:39Z",
  "published": "2026-04-30T15:30:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2892"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-block-conditions.php#L274"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php#L260"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php#L284"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3471326"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3443950f-1f94-4e0b-8906-1a9b9602a746?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:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-2892 (GCVE-0-2026-2892)

Vulnerability from cvelistv5 – Published: 2026-04-30 13:28 – Updated: 2026-05-01 16:38

Title

Otter Blocks <= 3.1.4 - Improper Authorization to Unauthenticated Purchase Verification Bypass via Forged Cookie

Summary

Severity ?

7.5 (High)


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

CWE

CWE-285 - Improper Authorization

Assigner

Wordfence

References

5 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/otter-…
https://plugins.trac.wordpress.org/browser/otter-…
https://plugins.trac.wordpress.org/browser/otter-…
https://plugins.trac.wordpress.org/changeset/3471326/

Impacted products

1 product

Vendor	Product	Version
themeisle	Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE	Affected: 0 , ≤ 3.1.4 (semver)

Credits

Drew Webber

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-2892",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-01T16:06:00.958329Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-01T16:38:40.570Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Otter Blocks \u2013 Gutenberg Blocks, Page Builder for Gutenberg Editor \u0026 FSE",
          "vendor": "themeisle",
          "versions": [
            {
              "lessThanOrEqual": "3.1.4",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Drew Webber"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Otter Blocks plugin for WordPress is vulnerable to Purchase Verification Bypass in all versions up to, and including, 3.1.4. This is due to the \u0027get_customer_data\u0027 method relying on an unsigned \u0027o_stripe_data\u0027 cookie to determine Stripe product ownership for unauthenticated users. The \u0027check_purchase\u0027 method trusts this cookie data without performing server-side verification against the Stripe API for one-time \u0027payment\u0027 mode purchases. This makes it possible for unauthenticated attackers to bypass Stripe purchase-gated content visibility conditions by forging the \u0027o_stripe_data\u0027 cookie with a target product ID, which is publicly exposed in the checkout block\u0027s HTML source."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-285",
              "description": "CWE-285 Improper Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-30T13:28:21.322Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3443950f-1f94-4e0b-8906-1a9b9602a746?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php#L260"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php#L284"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-block-conditions.php#L274"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3471326/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-02-20T18:35:32.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-04-29T00:00:00.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Otter Blocks \u003c= 3.1.4 - Improper Authorization to Unauthenticated Purchase Verification Bypass via Forged Cookie"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-2892",
    "datePublished": "2026-04-30T13:28:21.322Z",
    "dateReserved": "2026-02-20T18:15:09.231Z",
    "dateUpdated": "2026-05-01T16:38:40.570Z",
    "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.

Action not permitted

GHSA-H3RM-XCQX-MV7Q

CVE-2026-2892 (GCVE-0-2026-2892)

Tags

Sightings

Nomenclature