# CVE-2023-49090: CarrierWave Content-Type allowlist bypass vulnerability, possibly leading to XSS

Source: https://junglewise.ai/threats/cve-2023-49090-carrierwave-content-type-allowlist-bypass-vulnerability-possibly  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-11-29  
License: CC BY 4.0 with a link back

CVE-2023-49090 · Severity: low · CVSS 3.1 · Published 2023-11-29

CarrierWave Content-Type allowlist bypass vulnerability, possibly leading to XSS

Technologies: [carrierwave (RubyGems)](https://junglewise.ai/threats/technologies/carrierwave). Vendors: [RubyGems](https://junglewise.ai/threats/vendors/rubygems).

## Quick answers

**Is CVE-2023-49090 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-49090 being exploited in the wild.

**How severe is CVE-2023-49090?** Low severity, with a CVSS score of 3.1, published 29 November 2023.

**Which products and versions are affected?** carrierwave (RubyGems) ECOSYSTEM:introduced=3.0.0,fixed=3.0.5.

**Is there a fix for CVE-2023-49090?** Yes. carrierwave (RubyGems): upgrade to 3.0.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-49090?** Check whether you run carrierwave (RubyGems) 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

- carrierwave (RubyGems): upgrade to 3.0.5 or later

  ```sh
  bundle update carrierwave
  ```


## Affected products

- carrierwave (RubyGems) ECOSYSTEM:introduced=3.0.0,fixed=3.0.5

## Identifiers

- CVE-2023-49090
- GHSA-gxhx-g4fq-49hj

## Related threats

- [CarrierWave bypass in content_type_denylist regex validation](https://junglewise.ai/threats/cve-2026-44587-carrierwave-bypass-in-content-type-denylist-regex-validation)
- [CarrierWave content-Type allowlist bypass vulnerability which possibly leads to XSS remained](https://junglewise.ai/threats/cve-2024-29034-carrierwave-content-type-allowlist-bypass-vulnerability-which)
- [Code Injection vulnerability in CarrierWave::RMagick](https://junglewise.ai/threats/cve-2021-21305-code-injection-vulnerability-in-carrierwave-rmagick)
- [Server-side request forgery in CarrierWave](https://junglewise.ai/threats/cve-2021-21288-server-side-request-forgery-in-carrierwave)