{"api_version":"1","generated_at":"2026-04-23T04:22:02+00:00","cve":"CVE-2023-5740","urls":{"html":"https://cve.report/CVE-2023-5740","api":"https://cve.report/api/cve/CVE-2023-5740.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-5740","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-5740"},"summary":{"title":"Live Chat with Facebook Messenger <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode","description":"The Live Chat with Facebook Messenger plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'messenger' shortcode in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","state":"PUBLISHED","assigner":"Wordfence","published_at":"2023-10-25 18:17:44","updated_at":"2026-04-08 19:18:52"},"problem_types":["CWE-79","CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.4","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"security@wordfence.com","type":"Secondary","score":"6.4","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","baseScore":6.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"6.4","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","data":{"baseScore":6.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"}}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/aa32a790-242f-4142-9f4d-e1b2a07045bb?source=cve","name":"https://www.wordfence.com/threat-intel/vulnerabilities/id/aa32a790-242f-4142-9f4d-e1b2a07045bb?source=cve","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"Live Chat with Facebook Messenger <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://plugins.trac.wordpress.org/browser/wp-facebook-messenger/trunk/frontend/shortcode.php#L22","name":"https://plugins.trac.wordpress.org/browser/wp-facebook-messenger/trunk/frontend/shortcode.php#L22","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking"],"title":"403 Forbidden","mime":"text/html","httpstatus":"403","archivestatus":"404"},{"url":"https://plugins.trac.wordpress.org/browser/wp-facebook-messenger/trunk/frontend/shortcode.php#L32","name":"https://plugins.trac.wordpress.org/browser/wp-facebook-messenger/trunk/frontend/shortcode.php#L32","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking"],"title":"403 Forbidden","mime":"text/html","httpstatus":"403","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-5740","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-5740","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"ninjateam","product":"Live Chat with Facebook Messenger","version":"affected 1.0 semver","platforms":[]}],"timeline":[{"source":"CNA","time":"2023-10-23T00:00:00.000Z","lang":"en","value":"Discovered"},{"source":"CNA","time":"2023-10-23T00:00:00.000Z","lang":"en","value":"Disclosed"}],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"István Márton","lang":"en"}],"nvd_cpes":[{"cve_year":"2023","cve_id":"5740","vulnerable":"1","versionEndIncluding":"1.0","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"ninjateam","cpe5":"live_chat_with_facebook_messenger","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"wordpress","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2023","cve_id":"5740","cve":"CVE-2023-5740","epss":"0.001560000","percentile":"0.364400000","score_date":"2026-04-09","updated_at":"2026-04-10 00:07:03"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-02T08:07:32.683Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"tags":["x_transferred"],"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/aa32a790-242f-4142-9f4d-e1b2a07045bb?source=cve"},{"tags":["x_transferred"],"url":"https://plugins.trac.wordpress.org/browser/wp-facebook-messenger/trunk/frontend/shortcode.php#L22"},{"tags":["x_transferred"],"url":"https://plugins.trac.wordpress.org/browser/wp-facebook-messenger/trunk/frontend/shortcode.php#L32"}],"title":"CVE Program Container"},{"metrics":[{"other":{"content":{"id":"CVE-2023-5740","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2025-02-05T18:21:36.474951Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2025-02-05T18:58:22.168Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Live Chat with Facebook Messenger","vendor":"ninjateam","versions":[{"lessThanOrEqual":"1.0","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"István Márton"}],"descriptions":[{"lang":"en","value":"The Live Chat with Facebook Messenger plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'messenger' shortcode in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}],"metrics":[{"cvssV3_1":{"baseScore":6.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-04-08T17:14:19.323Z","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","shortName":"Wordfence"},"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/aa32a790-242f-4142-9f4d-e1b2a07045bb?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/wp-facebook-messenger/trunk/frontend/shortcode.php#L22"},{"url":"https://plugins.trac.wordpress.org/browser/wp-facebook-messenger/trunk/frontend/shortcode.php#L32"}],"timeline":[{"lang":"en","time":"2023-10-23T00:00:00.000Z","value":"Discovered"},{"lang":"en","time":"2023-10-23T00:00:00.000Z","value":"Disclosed"}],"title":"Live Chat with Facebook Messenger <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode"}},"cveMetadata":{"assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","assignerShortName":"Wordfence","cveId":"CVE-2023-5740","datePublished":"2023-10-24T13:53:00.649Z","dateReserved":"2023-10-24T01:30:17.674Z","dateUpdated":"2026-04-08T17:14:19.323Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2023-10-25 18:17:44","lastModifiedDate":"2026-04-08 19:18:52","problem_types":["CWE-79","CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"],"metrics":{"cvssMetricV31":[{"source":"security@wordfence.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","baseScore":6.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.1,"impactScore":2.7},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.3,"impactScore":2.7}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ninjateam:live_chat_with_facebook_messenger:*:*:*:*:*:wordpress:*:*","versionEndIncluding":"1.0","matchCriteriaId":"13650758-D290-49B8-9E8A-4DDB2F59B1B2"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2023","CveId":"5740","Ordinal":"1","Title":"Live Chat with Facebook Messenger <= 1.0 - Authenticated (Contri","CVE":"CVE-2023-5740","Year":"2023"},"notes":[{"CveYear":"2023","CveId":"5740","Ordinal":"1","NoteData":"The Live Chat with Facebook Messenger plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'messenger' shortcode in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","Type":"Description","Title":"Live Chat with Facebook Messenger <= 1.0 - Authenticated (Contri"}]}}}