CVE-2021-33483
An issue was discovered in CommentsService.ashx in OnyakTech Comments Pro 3.8. The comment...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-33483- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-33483- Updated
- 2026-11-02
EUVDEUVD-2021-20186 No score
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.
- Record
EUVD-2021-20186- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-m4jf-3r59-83j5 No score
An issue was discovered in CommentsService.ashx in OnyakTech Comments Pro 3.8. The comment...
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.
- Record
GHSA-m4jf-3r59-83j5- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-33483 is a medium vulnerability (CVSS 5.4) in Onyaktech Comments Pro Project Comments Pro, published September 7, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.62%, the 49th percentile. No source names a fixed version.
