{"api_version":"1","generated_at":"2026-07-23T17:10:19+00:00","cve":"CVE-2020-13443","urls":{"html":"https://cve.report/CVE-2020-13443","api":"https://cve.report/api/cve/CVE-2020-13443.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-13443","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-13443"},"summary":{"title":"CVE-2020-13443","description":"ExpressionEngine before 5.3.2 allows remote attackers to upload and execute arbitrary code in a .php%20 file via Compose Msg, Add attachment, and Save As Draft actions. A user with low privileges (member) is able to upload this. It is possible to bypass the MIME type check and file-extension check while uploading new files. Short aliases are not used for an attachment; instead, direct access is allowed to the uploaded files. It is possible to upload PHP only if one has member access, or registration/forum is enabled and one can create a member with the default group id of 5. To exploit this, one must to be able to send and compose messages (at least).","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2020-06-24 15:15:00","updated_at":"2020-07-02 18:37:00"},"problem_types":["CWE-434"],"metrics":[],"references":[{"url":"https://expressionengine.com/blog","name":"https://expressionengine.com/blog","refsource":"MISC","tags":["Vendor Advisory"],"title":"Blog | ExpressionEngine","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://gist.github.com/mariuszpoplwski/51604d8a6d7d78fffdf590c25e844e09","name":"https://gist.github.com/mariuszpoplwski/51604d8a6d7d78fffdf590c25e844e09","refsource":"MISC","tags":["Exploit","Third Party Advisory"],"title":"CVE-2020-13443 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-13443","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13443","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"13443","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"expressionengine","cpe5":"expressionengine","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"13443","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"expressionengine","cpe5":"expressionengine","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2020-13443","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"ExpressionEngine before 5.3.2 allows remote attackers to upload and execute arbitrary code in a .php%20 file via Compose Msg, Add attachment, and Save As Draft actions. A user with low privileges (member) is able to upload this. It is possible to bypass the MIME type check and file-extension check while uploading new files. Short aliases are not used for an attachment; instead, direct access is allowed to the uploaded files. It is possible to upload PHP only if one has member access, or registration/forum is enabled and one can create a member with the default group id of 5. To exploit this, one must to be able to send and compose messages (at least)."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://expressionengine.com/blog","refsource":"MISC","name":"https://expressionengine.com/blog"},{"refsource":"MISC","name":"https://gist.github.com/mariuszpoplwski/51604d8a6d7d78fffdf590c25e844e09","url":"https://gist.github.com/mariuszpoplwski/51604d8a6d7d78fffdf590c25e844e09"}]}},"nvd":{"publishedDate":"2020-06-24 15:15:00","lastModifiedDate":"2020-07-02 18:37:00","problem_types":["CWE-434"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":6.5},"severity":"MEDIUM","exploitabilityScore":8,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:expressionengine:expressionengine:*:*:*:*:*:*:*:*","versionEndExcluding":"5.3.2","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"13443","Ordinal":"174627","Title":"CVE-2020-13443","CVE":"CVE-2020-13443","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"13443","Ordinal":"1","NoteData":"ExpressionEngine before 5.3.2 allows remote attackers to upload and execute arbitrary code in a .php%20 file via Compose Msg, Add attachment, and Save As Draft actions. A user with low privileges (member) is able to upload this. It is possible to bypass the MIME type check and file-extension check while uploading new files. Short aliases are not used for an attachment; instead, direct access is allowed to the uploaded files. It is possible to upload PHP only if one has member access, or registration/forum is enabled and one can create a member with the default group id of 5. To exploit this, one must to be able to send and compose messages (at least).","Type":"Description","Title":null},{"CveYear":"2020","CveId":"13443","Ordinal":"2","NoteData":"2020-06-24","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"13443","Ordinal":"3","NoteData":"2020-06-24","Type":"Other","Title":"Modified"}]}}}