CVE-2026-16039 (GCVE-0-2026-16039)

Vulnerability from cvelistv5 – Published: 2026-08-07 06:00 – Updated: 2026-08-07 18:05
VLAI
Title
MStore API < 4.21.0 - Subscriber+ Order and Customer PII Disclosure via IDOR
Summary
The MStore API WordPress plugin before 4.21.0 does not restrict its vendor-orders endpoint to the caller's own orders, allowing any authenticated user, including Subscribers, to read every WooCommerce order in the store together with each customer's personal information.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://wpscan.com/vulnerability/85c6ff37-4761-42… exploitvdb-entrytechnical-description
Impacted products
Vendor Product Version
Unknown MStore API Affected: 0 , < 4.21.0 (semver)
Create a notification for this product.
Credits
Sai Praneeth Koti WPScan
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-16039",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-07T18:05:09.328346Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-639",
                "description": "CWE-639 Authorization Bypass Through User-Controlled Key",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-07T18:05:37.270Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "MStore API",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "4.21.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Sai Praneeth Koti"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "WPScan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The MStore API  WordPress plugin before 4.21.0 does not restrict its vendor-orders endpoint to the caller\u0027s own orders, allowing any authenticated user, including Subscribers, to read every WooCommerce order in the store together with each customer\u0027s personal information."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-639 Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-07T06:00:13.440Z",
        "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
        "shortName": "WPScan"
      },
      "references": [
        {
          "tags": [
            "exploit",
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://wpscan.com/vulnerability/85c6ff37-4761-420c-970f-05b2c50d3b28/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "MStore API \u003c 4.21.0 - Subscriber+ Order and Customer PII Disclosure via IDOR",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-16039",
    "datePublished": "2026-08-07T06:00:13.440Z",
    "dateReserved": "2026-07-17T09:20:57.280Z",
    "dateUpdated": "2026-08-07T18:05:37.270Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-16039",
      "date": "2026-08-08",
      "epss": "0.00201",
      "percentile": "0.10107"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-16039\",\"sourceIdentifier\":\"contact@wpscan.com\",\"published\":\"2026-08-07T06:16:56.060\",\"lastModified\":\"2026-08-07T18:17:09.317\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The MStore API  WordPress plugin before 4.21.0 does not restrict its vendor-orders endpoint to the caller\u0027s own orders, allowing any authenticated user, including Subscribers, to read every WooCommerce order in the store together with each customer\u0027s personal information.\"}],\"affected\":[{\"source\":\"contact@wpscan.com\",\"affectedData\":[{\"vendor\":\"Unknown\",\"product\":\"MStore API\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"4.21.0\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-08-07T18:05:09.328346Z\",\"id\":\"CVE-2026-16039\",\"options\":[{\"exploitation\":\"poc\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-639\"}]}],\"references\":[{\"url\":\"https://wpscan.com/vulnerability/85c6ff37-4761-420c-970f-05b2c50d3b28/\",\"source\":\"contact@wpscan.com\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-16039\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-07T18:05:09.328346Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-639\", \"description\": \"CWE-639 Authorization Bypass Through User-Controlled Key\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-07T18:05:31.351Z\"}}], \"cna\": {\"title\": \"MStore API \u003c 4.21.0 - Subscriber+ Order and Customer PII Disclosure via IDOR\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Sai Praneeth Koti\"}, {\"lang\": \"en\", \"type\": \"coordinator\", \"value\": \"WPScan\"}], \"affected\": [{\"vendor\": \"Unknown\", \"product\": \"MStore API\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"4.21.0\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://wpscan.com/vulnerability/85c6ff37-4761-420c-970f-05b2c50d3b28/\", \"tags\": [\"exploit\", \"vdb-entry\", \"technical-description\"]}], \"x_generator\": {\"engine\": \"WPScan CVE Generator\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"The MStore API  WordPress plugin before 4.21.0 does not restrict its vendor-orders endpoint to the caller\u0027s own orders, allowing any authenticated user, including Subscribers, to read every WooCommerce order in the store together with each customer\u0027s personal information.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-639 Authorization Bypass Through User-Controlled Key\"}]}], \"providerMetadata\": {\"orgId\": \"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81\", \"shortName\": \"WPScan\", \"dateUpdated\": \"2026-08-07T06:00:13.440Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-16039\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-07T18:05:37.270Z\", \"dateReserved\": \"2026-07-17T09:20:57.280Z\", \"assignerOrgId\": \"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81\", \"datePublished\": \"2026-08-07T06:00:13.440Z\", \"assignerShortName\": \"WPScan\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.