What’s Vulnerable › Vulnerabilities

CVE-2021-28002

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-19 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• TextPattern CMS: 4.9.0

References

• https://www.exploit-db.com/exploits/49617
• https://www.linkedin.com/in/tushar-vaidya-2111s5/
• https://www.exploit-db.com/exploits/49617
• https://www.linkedin.com/in/tushar-vaidya-2111s5/

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