Product Referenceproduct
https://github.com/textpattern/textpattern CVE-2021-47976
HIGH
TextPattern CMS 4.9.0-dev Authenticated Remote Code Execution via Plugin Upload
Record summary
CVE-2021-47976 has a selected CVSS score of 8.7 (high); EIP currently links 1 catalogued exploit.
Description
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.
Description source: CVE List
Exploitation context
Available material
- Catalogued exploits
- 1
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactTotal
CISA Coordinator · SSVC 2.0.3 · Evaluated May 18, 2026 · Source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
TextPattern CMSBrowse Textpattern / TextPattern CMS | CVE List | 4.9.0-dev | affected |
Proofs of concept
1Catalogued exploits
ExploitDBTextPattern CMS 4.9.0-dev - Remote Command Execution (RCE) (Authenticated)ExploitDB exploitby Mevlüt AkçamNot analyzed1 file
References
5nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2021-47976 Official Product Homepageproduct
https://textpattern.com/ ExploitDB-50095exploit
https://www.exploit-db.com/exploits/50095 VulnCheck Advisory: TextPattern CMS 4.9.0-dev Authenticated Remote Code Execution via Plugin UploadThird-party advisory
https://www.vulncheck.com/advisories/textpattern-cms-dev-authenticated-remote-code-execution-via-plugin-upload