What’s Vulnerable › Vulnerabilities

CVE-2021-33483

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-09-07 · updated 2026-06-17
• Weakness: CWE-79

Description

An issue was discovered in CommentsService.ashx in OnyakTech Comments Pro 3.8. The comment posting functionality allows an attacker to add an XSS payload to the JSON request that will execute when users visit the page with the comment.

Affected products

• Onyaktech Comments Pro Project Onyaktech Comments Pro: 3.8

References

• https://burninatorsec.blogspot.com/2021/07/onyaktech-comments-pro-broken.html
• https://twitter.com/onyaktech
• https://burninatorsec.blogspot.com/2021/07/onyaktech-comments-pro-broken.html
• https://twitter.com/onyaktech

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