CVE-2021-47976
published 2026-05-16CVE-2021-47976: TextPattern CMS 4.9.0-dev contains a remote code execution vulnerability that allows authenticated attackers to upload arbitrary PHP files by exploiting the…
PriorityP260high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.32%
23.2th percentile
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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| textpattern | textpattern_cms | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.08.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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VulDB
TextPattern CMS 4.9.0-dev textpattern/tmp/ upload cross-site request forgery (Exploit 50095 / EUVD-2021-34835)
vuldb·2026-05-16·CVSS 8.7
CVE-2021-47976 [HIGH] TextPattern CMS 4.9.0-dev textpattern/tmp/ upload cross-site request forgery (Exploit 50095 / EUVD-2021-34835)
A vulnerability, which was classified as problematic, was found in TextPattern CMS 4.9.0-dev. Affected is the function Upload of the file textpattern/tmp/. Such manipulation leads to cross-site request forgery.
This vulnerability is uniquely identified as CVE-2021-47976. The attack can be launched remotely. Moreover, an exploit is present.
GHSA
GHSA-77f2-mm55-xvp4: TextPattern CMS 4
ghsa_unreviewed·2026-05-16
CVE-2021-47976 [HIGH] CWE-352 GHSA-77f2-mm55-xvp4: TextPattern CMS 4
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-05-16
Published