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Vulnerability record · CVE-2017-16949 · published 19 December 2017

CVE-2017-16949: Accesspressthemes anonymous post pro unrestricted file upload vulnerability

Accesspressthemes · Anonymous Post Pro

An issue was discovered in the AccessKeys AccessPress Anonymous Post Pro plugin through 3.1.9 for WordPress. Improper input sanitization allows the attacker to override the settings for allowed file extensions and upload file size, related to inc/cores/file-uploader.php and file-uploader/file-uploader-class.php. This allows the attacker to upload anything they want to the server, as demonstrated by an action=ap_file_upload_action&allowedExtensions[]=php request to /wp-admin/admin-ajax.php that results in a .php file upload and resultant PHP code execution.

9.8 CVSS 3.0 Critical EPSS 19% · top 2.8% CWE-434 · Unrestricted file upload
9.8CVSS 3.0 base score, v2 7.5
19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 6 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered in the AccessKeys AccessPress Anonymous Post Pro plugin through 3.1.9 for WordPress. Improper input sanitization allows the attacker to override the settings for allowed file extensions and upload file size, related to inc/cores/file-uploader.php and file-uploader/file-uploader-class.php. This allows the attacker to upload anything they want to the server, as demonstrated by an action=ap_file_upload_action&allowedExtensions[]=php request to /wp-admin/admin-ajax.php that results in a .php file upload and resultant PHP code execution.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/145398/Accesspress-Anonymous-Post-Pro-Unauthenticated-Arbitrary-File-Upload.html ExploitThird Party AdvisoryVDB Entry
https://wpvulndb.com/vulnerabilities/8977 ExploitThird Party AdvisoryVDB Entry
https://www.exploit-db.com/exploits/43324/ ExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/145398/Accesspress-Anonymous-Post-Pro-Unauthenticated-Arbitrary-File-Upload.html ExploitThird Party AdvisoryVDB Entry
https://wpvulndb.com/vulnerabilities/8977 ExploitThird Party AdvisoryVDB Entry
https://www.exploit-db.com/exploits/43324/ ExploitThird Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-16949), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.