XSS in Textpattern

CVE-2021-40658

Textpattern 4.8.7 is affected by a HTML injection vulnerability through “Content>Write>Body”.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (43.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Textpattern — versions 4.8.7
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-40658?: CVE-2021-40658 is a medium-severity vulnerability in Textpattern, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2022-06-14.
How severe is CVE-2021-40658?: Medium severity. CVSS v3 base score is 4.8 out of 10.