CVE-2019-5421 is a critical vulnerability affecting Plataformatec Devise versions 4.5.0 and earlier, specifically within the lockable module's #increment_failed_attempts method. This flaw (CWE-367) allows multiple concurrent login attempts to bypass the account lockout mechanism, making brute-force attacks highly effective. With a CVSS score of 9.8 (CRITICAL), it is easily exploitable over the network with low complexity, potentially leading to full compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 4.5.0CPE matchmatch criteria | cpe:2.3:a:plataformatec:devise:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.