# CVE-2022-23655: Missing server signature validation in OctoberCMS

Source: https://junglewise.ai/threats/cve-2022-23655-missing-server-signature-validation-in-octobercms  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-02-24  
License: CC BY 4.0 with a link back

CVE-2022-23655 · Severity: low · CVSS 3.1 · Published 2022-02-24

Missing server signature validation in OctoberCMS

Technologies: [october/system (Packagist)](https://junglewise.ai/threats/technologies/october-system). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2022-23655 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2022-23655 being exploited in the wild.

**How severe is CVE-2022-23655?** Low severity, with a CVSS score of 3.1, published 24 February 2022.

**Which products and versions are affected?** october/system (Packagist) ECOSYSTEM:introduced=1.1.0,fixed=1.1.11.

**Is there a fix for CVE-2022-23655?** Yes. october/system (Packagist): upgrade to 1.1.11 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2022-23655?** Check whether you run october/system (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- october/system (Packagist): upgrade to 1.1.11 or later

  ```sh
  composer require october/system:^1.1.11
  ```


## Affected products

- october/system (Packagist) ECOSYSTEM:introduced=1.1.0,fixed=1.1.11

## Identifiers

- CVE-2022-23655
- GHSA-53m6-44rc-h2q5

## Related threats

- [October CMS PHP object injection in widget session storage](https://junglewise.ai/threats/cve-2026-49400-october-cms-php-object-injection-in-widget-session-storage)
- [October CMS Twig sandbox bypass in Safe Mode](https://junglewise.ai/threats/cve-2026-46696-october-cms-twig-sandbox-bypass-in-safe-mode)
- [October CMS: Editor Sub-Permission Bypass for Asset and Blueprint File Operations](https://junglewise.ai/threats/cve-2026-29179-october-cms-editor-sub-permission-bypass-for-asset-and-blueprint)
- [October CMS: Reflected XSS via DataTable Form Widget](https://junglewise.ai/threats/cve-2026-27937-october-cms-reflected-xss-via-datatable-form-widget)
- [October CMS has Safe Mode Bypass via CSS Preprocessor Compilers](https://junglewise.ai/threats/cve-2026-26067-october-cms-has-safe-mode-bypass-via-css-preprocessor-compilers)