CVE-2021-28002

A persistent cross-site scripting vulnerability was discovered in the Excerpt parameter in Textpattern CMS 4.9.0 which allows remote attackers to execute arbitrary code via a crafted payload entered into the URL field. The vulnerability is triggered by users visiting the 'Articles' page.

• CWE-79

• https://www.exploit-db.com/exploits/49617Exploit, Third Party Advisory, VDB Entry
• https://www.linkedin.com/in/tushar-vaidya-2111s5/Third Party Advisory
• https://www.exploit-db.com/exploits/49617Exploit, Third Party Advisory, VDB Entry
• https://www.linkedin.com/in/tushar-vaidya-2111s5/Third Party Advisory

Published

Aug 19, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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