# devise-two-factor (RubyGems) vulnerabilities

Source: https://junglewise.ai/threats/technologies/devise-two-factor  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/devise-two-factor.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 4 vulnerabilities in devise-two-factor (RubyGems): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2024-8796, was published on 17 September 2024.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 4 (0 critical, 0 exploited in the wild)

## About devise-two-factor (RubyGems)

Ruby Devise extension adding two-factor authentication support to Rails applications.

## Latest devise-two-factor (RubyGems) vulnerabilities

- [CVE-2024-8796: Devise-Two-Factor Authentication Uses Insufficient Default OTP Shared Secret Length](https://junglewise.ai/threats/cve-2024-8796-devise-two-factor-authentication-uses-insufficient-default-otp) (low, CVSS 3.1, published 17 Sep 2024)
- [CVE-2024-0227: Devise-Two-Factor vulnerable to brute force attacks](https://junglewise.ai/threats/cve-2024-0227-devise-two-factor-vulnerable-to-brute-force-attacks) (low, CVSS 3.1, published 12 Jan 2024)
- [CVE-2021-43177: Improper one time password handling in devise-two-factor](https://junglewise.ai/threats/cve-2021-43177-improper-one-time-password-handling-in-devise-two-factor) (low, CVSS 3.1, published 7 Apr 2022)
- [CVE-2015-7225: Tinfoil Devise-two-factor does not "burn" a successfully validated one-time password (OTP)](https://junglewise.ai/threats/cve-2015-7225-tinfoil-devise-two-factor-does-not-burn-a-successfully-validated) (low, CVSS 3, published 28 Aug 2018)

## Most severe devise-two-factor (RubyGems) vulnerabilities

- [CVE-2021-43177: Improper one time password handling in devise-two-factor](https://junglewise.ai/threats/cve-2021-43177-improper-one-time-password-handling-in-devise-two-factor) (low, CVSS 3.1, published 7 Apr 2022)
- [CVE-2024-8796: Devise-Two-Factor Authentication Uses Insufficient Default OTP Shared Secret Length](https://junglewise.ai/threats/cve-2024-8796-devise-two-factor-authentication-uses-insufficient-default-otp) (low, CVSS 3.1, published 17 Sep 2024)
- [CVE-2024-0227: Devise-Two-Factor vulnerable to brute force attacks](https://junglewise.ai/threats/cve-2024-0227-devise-two-factor-vulnerable-to-brute-force-attacks) (low, CVSS 3.1, published 12 Jan 2024)
- [CVE-2015-7225: Tinfoil Devise-two-factor does not "burn" a successfully validated one-time password (OTP)](https://junglewise.ai/threats/cve-2015-7225-tinfoil-devise-two-factor-does-not-burn-a-successfully-validated) (low, CVSS 3, published 28 Aug 2018)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other RubyGems technologies

- [actionpack (RubyGems)](https://junglewise.ai/threats/technologies/actionpack): 77 vulnerabilities
- [nokogiri (RubyGems)](https://junglewise.ai/threats/technologies/nokogiri): 69 vulnerabilities
- [rack (RubyGems)](https://junglewise.ai/threats/technologies/rack): 55 vulnerabilities
- [activerecord (RubyGems)](https://junglewise.ai/threats/technologies/rubygems-activerecord): 26 vulnerabilities
- [rubygems-update (RubyGems)](https://junglewise.ai/threats/technologies/rubygems-update): 25 vulnerabilities
- [puppet (RubyGems)](https://junglewise.ai/threats/technologies/puppet): 23 vulnerabilities
- [activesupport (RubyGems)](https://junglewise.ai/threats/technologies/activesupport): 20 vulnerabilities
- [actionview (RubyGems)](https://junglewise.ai/threats/technologies/actionview): 19 vulnerabilities
- [activestorage (RubyGems)](https://junglewise.ai/threats/technologies/activestorage): 19 vulnerabilities
- [camaleon_cms (RubyGems)](https://junglewise.ai/threats/technologies/camaleon-cms): 19 vulnerabilities
- [rails-html-sanitizer (RubyGems)](https://junglewise.ai/threats/technologies/rails-html-sanitizer): 18 vulnerabilities
- [loofah (RubyGems)](https://junglewise.ai/threats/technologies/loofah): 17 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "devise-two-factor (RubyGems) vulnerabilities", https://junglewise.ai/threats/technologies/devise-two-factor, 13 November 2026.