CVE-2023-36828: Statamic's Antlers sanitizer cannot effectively sanitize malicious SVG
First published: Wed Jul 05 2023(Updated: )
Statamic is a flat-first, Laravel and Git powered content management system. Prior to version 4.10.0, the SVG tag does not sanitize malicious SVG. Therefore, an attacker can exploit this vulnerability to perform cross-site scripting attacks using SVG, even when using the `sanitize` function. Version 4.10.0 contains a patch for this issue.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Statamic Statamic | <4.10.0 |
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Reference Links
- https://github.com/statamic/cms/blob/f806b6b007ddcf066082eef175653c5beaa96d60/src/Http/Controllers/CP/Fieldtypes/FilesFieldtypeController.php#L15
- https://github.com/statamic/cms/blob/f806b6b007ddcf066082eef175653c5beaa96d60/src/Tags/Svg.php#L36-L40
- https://github.com/statamic/cms/commit/c714893ad92de6e5ede17b501003441af505b30d
- https://github.com/statamic/cms/pull/8408
- https://github.com/statamic/cms/releases/tag/v4.10.0
- https://github.com/statamic/cms/security/advisories/GHSA-6r5g-cq4q-327g
Frequently Asked Questions
What is CVE-2023-36828?
CVE-2023-36828 is a vulnerability in Statamic, a content management system, that allows attackers to perform cross-site scripting (XSS) attacks using malicious SVG tags.
What is the severity of CVE-2023-36828?
The severity of CVE-2023-36828 is medium, with a severity value of 5.4.
Which versions of Statamic are affected by CVE-2023-36828?
Versions up to 4.10.0 of Statamic are affected by CVE-2023-36828.
How can an attacker exploit CVE-2023-36828?
An attacker can exploit CVE-2023-36828 by using malicious SVG tags to perform cross-site scripting attacks.
Is there a fix for CVE-2023-36828?
Yes, the fix for CVE-2023-36828 is available in versions after 4.10.0 of Statamic.
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