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Vulnerabilities CVE-2026-32986

CVE-2026-32986

Medium
Open
TLP:CLEAR

Textpattern CMS 4.9.0: Second-Order XSS via Atom Feed Injection

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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.

Details

CVSS Score
5.1
EPSS Score
0.16%

5.6th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Mar 20, 2026
Last Modified
Jul 14, 2026
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