What’s Vulnerable › Vulnerabilities

CVE-2020-23209

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-01 · updated 2026-06-17
• Weakness: CWE-79

Description

A stored cross site scripting (XSS) vulnerability in phplist 3.5.3 allows attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the "List Description" field under the "Edit A List" module.

Affected products

• PHPList: 3.5.3

References

• https://github.com/phpList/phplist3/issues/666
• https://github.com/phpList/phplist3/issues/666

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