CVE-2021-4302 slackero phpwcms SVG File cross site scripting

What is CVE-2021-4302?

CVE-2021-4302 is a low-severity vulnerability in slackero phpwcms, published on 4 Jan 2023.

Official description

A vulnerability was found in slackero phpwcms up to 1.9.26. It has been classified as problematic. This affects an unknown part of the component SVG File Handler. The manipulation leads to cross site scripting. It is possible to initiate the attack remotely. Upgrading to version 1.9.27 is able to address this issue. The patch is named b39db9c7ad3800f319195ff0e26a0981395b1c54. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-217419.

Weakness: CWE-79

Which versions are affected by CVE-2021-4302?

It affects 1 product.

Products include Phpwcms Phpwcms.

How do I fix CVE-2021-4302?

No fix has been published for CVE-2021-4302 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-4302 being exploited?

There is no known exploitation of CVE-2021-4302 in the wild and no public exploit code.

Other vulnerabilities in slackero phpwcms

• CVE-2021-36424 Code injection in n/a Critical 9.8
• CVE-2020-21784 Code injection in n/a Critical 9.8
• CVE-2021-36426 File upload in n/a High 8.8
• CVE-2006-7019 Code injection in n/a High 7.5
• CVE-2025-5499 slackero phpwcms image_resized.php getimagesize deserialization Medium 6.9

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6629-529f-2h95.