CVE-2019-16109 json
Authentication Bypass in Devise
published 2019-09-08 7 y ago modified 2026-06-17 4 mo ago also GHSA-fcjw-8rhj-gwwc , EUVD-2019-0664
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
An issue was discovered in Plataformatec Devise before 4.7.1. It confirms accounts upon receiving a request with a blank confirmation_token, if a database record has a blank value in the confirmation_token column. (However, there is no scenario within Devise itself in which such database records would exist.)
Patch / fix
Exploit prediction
1.83% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| rubygems | devise | <4.7.1 |
4.7.1 |
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
github.com
/plataformatec/devise/pull/5132
web, patch, third-party-advisory
-
github.com
/plataformatec/devise/issues/5071
web, third-party-advisory
-
github.com
/plataformatec/devise/compare/v4.7.0...v4.7.1
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-16109
advisory
-
github.com
/plataformatec/devise
package
-
github.com
/rubysec/ruby-advisory-db/blob/master/gems/devise/CVE-2019-16109.yml
web
Sources
- CVE List CVE-2019-16109
- GitHub Advisory GHSA-fcjw-8rhj-gwwc
- NVD CVE-2019-16109
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.