PT-2026-41462 · Textpattern · Textpattern Cms

Mevlüt Akçam · Published 2026-05-16 · Updated 2026-05-16 · CVE-2021-47976

Mitre

CVSS v3.1

8.8

High

Base vector

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

TextPattern CMS 4.9.0-dev contains a remote code execution vulnerability that allows authenticated attackers to upload arbitrary PHP files by exploiting the plugin upload functionality. Attackers can authenticate, retrieve a CSRF token from the plugin event page, and upload malicious PHP files to the textpattern/tmp/ directory for code execution.

Exploit

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2021-47976

Affected Products

Textpattern Cms

References · 5

• 🔥 https://exploit-db.com/exploits/50095 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47976 · Security Note
• https://github.com/textpattern/textpattern · Note
• https://textpattern.com · Note
• https://vulncheck.com/advisories/textpattern-cms-dev-authenticated-remote-code-execution-via-plugin-upload · Note