CVE-2023-6855 - Vulnerability Details - OpenCVE

The Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions plugin for WordPress is vulnerable to unauthorized modification of membership levels created by the plugin due to an incorrectly implemented capability check in the pmpro_rest_api_get_permissions_check function in all versions up to 2.12.5 (inclusive). This makes it possible for unauthenticated attackers to change membership levels including prices.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00347.

Exploitation none

Automatable yes

Technical Impact partial

Vendors	Products
Strangerstudios	Paid Memberships Pro

Configuration 1 [-]

cpe:2.3:a:strangerstudios:paid_memberships_pro:*:*:*:*:*:wordpress:*:*

No data.

No data.

References

Link	Providers
https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L528
https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L997
https://plugins.trac.wordpress.org/changeset/3011575/paid-memberships-pro/trunk/includes/rest-api.php?contextall=1&old=2947813&old_path=%2Fpaid-memberships-pro%2Ftrunk%2Fincludes%2Frest-api.php
https://www.wordfence.com/threat-intel/vulnerabilities/id/383c7837-e7b7-4608-9cdc-91b7dbc7f4e2?source=cve

History

Wed, 08 Apr 2026 17:45:00 +0000

Type	Values Removed	Values Added
Title		Paid Memberships Pro <= 2.12.5 - Missing Authorization via API

Tue, 03 Jun 2025 14:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: Wordfence

Published: 2024-01-11T08:32:31.855Z

Updated: 2026-04-08T16:46:30.300Z

Reserved: 2023-12-15T17:01:59.388Z

Link: CVE-2023-6855

Vulnrichment

Updated: 2024-08-02T08:42:08.250Z

NVD

Status : Modified

Published: 2024-01-11T09:15:52.613

Modified: 2026-04-08T18:18:43.720

Link: CVE-2023-6855

Redhat

No data.

OpenCVE Enrichment

No data.

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-6855", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2023-12-15T17:01:59.388Z", "datePublished": "2024-01-11T08:32:31.855Z", "dateUpdated": "2026-04-08T16:46:30.300Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-04-08T16:46:30.300Z"}, "affected": [{"vendor": "strangerstudios", "product": "Paid Memberships Pro \u2013 Content Restriction, User Registration, & Paid Subscriptions", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "2.12.5", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The Paid Memberships Pro \u2013 Content Restriction, User Registration, & Paid Subscriptions plugin for WordPress is vulnerable to unauthorized modification of membership levels created by the plugin due to an incorrectly implemented capability check in the pmpro_rest_api_get_permissions_check function in all versions up to 2.12.5 (inclusive). This makes it possible for unauthenticated attackers to change membership levels including prices."}], "title": "Paid Memberships Pro <= 2.12.5 - Missing Authorization via API", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/383c7837-e7b7-4608-9cdc-91b7dbc7f4e2?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L528"}, {"url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L997"}, {"url": "https://plugins.trac.wordpress.org/changeset/3011575/paid-memberships-pro/trunk/includes/rest-api.php?contextall=1&old=2947813&old_path=%2Fpaid-memberships-pro%2Ftrunk%2Fincludes%2Frest-api.php"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-862 Missing Authorization", "cweId": "CWE-862", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM"}}], "credits": [{"lang": "en", "type": "finder", "value": "Craig Smith"}], "timeline": [{"time": "2023-12-21T00:00:00.000Z", "lang": "en", "value": "Disclosed"}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T08:42:08.250Z"}, "title": "CVE Program Container", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/383c7837-e7b7-4608-9cdc-91b7dbc7f4e2?source=cve", "tags": ["x_transferred"]}, {"url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L528", "tags": ["x_transferred"]}, {"url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L997", "tags": ["x_transferred"]}, {"url": "https://plugins.trac.wordpress.org/changeset/3011575/paid-memberships-pro/trunk/includes/rest-api.php?contextall=1&old=2947813&old_path=%2Fpaid-memberships-pro%2Ftrunk%2Fincludes%2Frest-api.php", "tags": ["x_transferred"]}]}, {"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-862", "lang": "en", "description": "CWE-862 Missing Authorization"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-05-08T20:10:28.752548Z", "id": "CVE-2023-6855", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-06-03T14:09:46.500Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/383c7837-e7b7-4608-9cdc-91b7dbc7f4e2?source=cve", "tags": ["x_transferred"]}, {"url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L528", "tags": ["x_transferred"]}, {"url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L997", "tags": ["x_transferred"]}, {"url": "https://plugins.trac.wordpress.org/changeset/3011575/paid-memberships-pro/trunk/includes/rest-api.php?contextall=1&old=2947813&old_path=%2Fpaid-memberships-pro%2Ftrunk%2Fincludes%2Frest-api.php", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T08:42:08.250Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-6855", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-05-08T20:10:28.752548Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-862", "description": "CWE-862 Missing Authorization"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-05-08T20:10:30.359Z"}}], "cna": {"title": "Paid Memberships Pro <= 2.12.5 - Missing Authorization via API", "credits": [{"lang": "en", "type": "finder", "value": "Craig Smith"}], "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 5.3, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}}], "affected": [{"vendor": "strangerstudios", "product": "Paid Memberships Pro \u2013 Content Restriction, User Registration, & Paid Subscriptions", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "2.12.5"}], "defaultStatus": "unaffected"}], "timeline": [{"lang": "en", "time": "2023-12-21T00:00:00.000Z", "value": "Disclosed"}], "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/383c7837-e7b7-4608-9cdc-91b7dbc7f4e2?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L528"}, {"url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L997"}, {"url": "https://plugins.trac.wordpress.org/changeset/3011575/paid-memberships-pro/trunk/includes/rest-api.php?contextall=1&old=2947813&old_path=%2Fpaid-memberships-pro%2Ftrunk%2Fincludes%2Frest-api.php"}], "descriptions": [{"lang": "en", "value": "The Paid Memberships Pro \u2013 Content Restriction, User Registration, & Paid Subscriptions plugin for WordPress is vulnerable to unauthorized modification of membership levels created by the plugin due to an incorrectly implemented capability check in the pmpro_rest_api_get_permissions_check function in all versions up to 2.12.5 (inclusive). This makes it possible for unauthenticated attackers to change membership levels including prices."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-862", "description": "CWE-862 Missing Authorization"}]}], "providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-04-08T16:46:30.300Z"}}}, "cveMetadata": {"cveId": "CVE-2023-6855", "state": "PUBLISHED", "dateUpdated": "2026-04-08T16:46:30.300Z", "dateReserved": "2023-12-15T17:01:59.388Z", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "datePublished": "2024-01-11T08:32:31.855Z", "assignerShortName": "Wordfence"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:strangerstudios:paid_memberships_pro:*:*:*:*:*:wordpress:*:*", "matchCriteriaId": "D4FD7670-513A-4A2C-8758-7478323585A8", "versionEndIncluding": "2.12.5", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Paid Memberships Pro \u2013 Content Restriction, User Registration, & Paid Subscriptions plugin for WordPress is vulnerable to unauthorized modification of membership levels created by the plugin due to an incorrectly implemented capability check in the pmpro_rest_api_get_permissions_check function in all versions up to 2.12.5 (inclusive). This makes it possible for unauthenticated attackers to change membership levels including prices."}, {"lang": "es", "value": "El complemento Paid Memberships Pro \u2013 Content Restriction, User Registration, & Paid Subscriptions para WordPress es vulnerable a modificaciones no autorizadas de los niveles de membres\u00eda creados por el complemento debido a una verificaci\u00f3n de capacidad implementada incorrectamente en la funci\u00f3n pmpro_rest_api_get_permissions_check en todas las versiones hasta 2.12.5 (incluida). Esto hace posible que atacantes no autenticados cambien los niveles de membres\u00eda, incluidos los precios."}], "id": "CVE-2023-6855", "lastModified": "2026-04-08T18:18:43.720", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security@wordfence.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-01-11T09:15:52.613", "references": [{"source": "security@wordfence.com", "tags": ["Issue Tracking"], "url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L528"}, {"source": "security@wordfence.com", "tags": ["Issue Tracking"], "url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L997"}, {"source": "security@wordfence.com", "tags": ["Issue Tracking"], "url": "https://plugins.trac.wordpress.org/changeset/3011575/paid-memberships-pro/trunk/includes/rest-api.php?contextall=1&old=2947813&old_path=%2Fpaid-memberships-pro%2Ftrunk%2Fincludes%2Frest-api.php"}, {"source": "security@wordfence.com", "tags": ["Third Party Advisory"], "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/383c7837-e7b7-4608-9cdc-91b7dbc7f4e2?source=cve"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking"], "url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L528"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking"], "url": "https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L997"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking"], "url": "https://plugins.trac.wordpress.org/changeset/3011575/paid-memberships-pro/trunk/includes/rest-api.php?contextall=1&old=2947813&old_path=%2Fpaid-memberships-pro%2Ftrunk%2Fincludes%2Frest-api.php"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/383c7837-e7b7-4608-9cdc-91b7dbc7f4e2?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security@wordfence.com", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-862"}], "source": "nvd@nist.gov", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-862"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}