What’s Vulnerable › Vulnerabilities

CVE-2021-42233

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-05-23 · updated 2026-06-17
• Weakness: CWE-79

Description

The Simple Blog plugin in Wondercms 3.4.1 is vulnerable to stored cross-site scripting (XSS) vulnerability. When any user opens a particular blog hosted on an attackers' site, XSS may occur.

Affected products

• Simple Blog Project Simple Blog: all versions

References

• https://hackerone.com/reports/485748
• https://hackerone.com/reports/647130
• https://hackerone.com/reports/961046
• https://hackerone.com/reports/485748
• https://hackerone.com/reports/647130
• https://hackerone.com/reports/961046

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