What is CVE-2023-53911?

CVE-2023-53911 is a medium-severity vulnerability in Textpattern, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-12-17.

How severe is CVE-2023-53911?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Textpattern

CVE-2023-53911

Textpattern CMS 4.8.8 contains a stored cross-site scripting vulnerability in the article excerpt field that allows authenticated users to inject malicious scripts. Attackers can insert JavaScript payloads into the excerpt, which will execute when the article is viewed by other users.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (18.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Textpattern — versions 4.8.8
Tmrswrr Textpattern Cms — versions 4.8.8

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

ExploitDB-51523 (Exploit, exploit, Third Party Advisory, VDB Entry)
Official Product Webpage (Product, product)
VulnCheck Advisory: Textpattern CMS 4.8.8 Authenticated Stored Cross-Site Scripting via Article Excerpt (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2023-53911?: CVE-2023-53911 is a medium-severity vulnerability in Textpattern, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-12-17.
How severe is CVE-2023-53911?: Medium severity. CVSS v3 base score is 5.4 out of 10.