PT-2026-39517 · Unknown · Textpattern Cms

Published 2026-05-10 · Updated 2026-05-10 · CVE-2021-47943

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions TextPattern CMS version 4.8.7

Description Authenticated attackers can execute arbitrary commands by uploading malicious PHP files through the file upload functionality. This is achieved by uploading a PHP shell via the Files section in the content area and accessing the uploaded file at the "/textpattern/files/" endpoint, where GET parameters are passed to the system function.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2021-47943

Affected Products

Textpattern Cms

References · 5

• 🔥 https://exploit-db.com/exploits/49996 · Exploit
• 🔥 https://exploit-db.com/exploits/50415 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47943 · Security Note
• https://twitter.com/CVEnew/status/2053537423272087758 · Twitter Post
• https://vulncheck.com/advisories/textpattern-cms-remote-code-execution-via-file-upload · Note