What is CVE-2023-50038?

CVE-2023-50038 is a high-severity vulnerability in Textpattern, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2023-12-28.

How severe is CVE-2023-50038?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2023-50038 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Textpattern

CVE-2023-50038

There is an arbitrary file upload vulnerability in the background of textpattern cms v4.8.8, which leads to the loss of server permissions.

Vulnerability class: Unrestricted File Upload

Published 2023-12-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Textpattern — versions 4.8.8

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

tanjiti/sec_

References

www.cnblogs.com/fengzun/articles/17862578.html (Exploit)
gist.github.com/LeopoldSkell/7e18bf09005c327a045abbfe39b1e676 (Third Party Advisory)

Frequently asked questions

What is CVE-2023-50038?: CVE-2023-50038 is a high-severity vulnerability in Textpattern, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2023-12-28.
How severe is CVE-2023-50038?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2023-50038 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.