XSS in Textpattern
CVE-2026-32986
Textpattern CMS version 4.9.0 contains a second-order cross-site scripting vulnerability that allows attackers to inject malicious scripts by exploiting improper sanitization of user-supplied input in Atom feed XML elements. Attackers can embed unescaped payloads in parameters such as category that are reflected into Atom fields like and , which execute as JavaScript when feed readers or CMS aggregators consume the feed and insert content into the DOM using unsafe methods.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (15.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Textpattern — versions 4.9.0
- Textpattern Cms — versions 4.9.0
Weakness classification (CWE)
References
- Packet Storm listing (Textpattern 4.9.0 Second-Order XSS via Atom Feed Injection) (Exploit, exploit, Issue Tracking)
- Vendor site (Product, product)
Frequently asked questions
- What is CVE-2026-32986?
- CVE-2026-32986 is a medium-severity vulnerability in Textpattern, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-20.
- How severe is CVE-2026-32986?
- Medium severity. CVSS v3 base score is 6.1 out of 10.