What’s Vulnerable › Vulnerabilities
CVE-2026-32986: Textpattern CMS 4.9.0: Second-Order XSS via Atom Feed Injection
- Severity: medium (CVSS 6.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-03-20 · updated 2026-06-17
- Weakness: CWE-79
Description
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.
Affected products
- TextPattern CMS: 4.9.0
References
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