What is CVE-2018-1000090?

CVE-2018-1000090 is a high-severity vulnerability in Textpattern, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2018-03-13.

How severe is CVE-2018-1000090?

High severity. CVSS v3 base score is 7.5 out of 10.

XXE in Textpattern

CVE-2018-1000090

textpattern version version 4.6.2 contains a XML Injection vulnerability in Import XML feature that can result in Denial of service in context to the web server by exhausting server memory resources. This attack appear to be exploitable via Uploading a specially crafted XML file.

Vulnerability class: XXE (XML External Entity)

Published 2018-03-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.013 (70.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Textpattern — versions 4.6.2

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

github.com/textpattern/textpattern/issues/1141 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-1000090?: CVE-2018-1000090 is a high-severity vulnerability in Textpattern, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2018-03-13.
How severe is CVE-2018-1000090?: High severity. CVSS v3 base score is 7.5 out of 10.