CVE-2026-32986
Textpattern CMS 4.9.0: Second-Order XSS via Atom Feed Injection
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 CWE-116 |
| Vendor | textpattern |
| Product | textpattern cms |
| Published | Mar 20, 2026 |
| Last Updated | Mar 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Textpattern / Textpattern CMS
4.9.0
References
Credits
indoushka