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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (21.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Textpattern — versions 4.8.8
- Tmrswrr Textpattern Cms — versions 4.8.8
Weakness classification (CWE)
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.