CVE-2019-5420

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

89.33% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 99.7% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2019-03-27 13:48Z7 YR AGO

Last updated

2024-08-04 19:54Z2 YR AGO

Reserved

2019-01-04

Assigning CNA

hackerone

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class
• CWE-330Use of Insufficiently Random ValuesClass
• CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)Base

Data version

5.1

Document digest

ae7d06853465301a147b28d227effc4081f436fcfb31b5b03cde850d66c1a064

• weblog.rubyonrails.orghttps://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/x_refsource_CONFIRM
• groups.google.comhttps://groups.google.com/forum/#%21topic/rubyonrails-security/IsQKvDqZdKwx_refsource_CONFIRM
• packetstormsecurity.comhttp://packetstormsecurity.com/files/152704/Ruby-On-Rails-DoubleTap-Development-Mode-secret_key_base-Remote-Code-Execution.htmlx_refsource_MISC
• www.exploit-db.com46785https://www.exploit-db.com/exploits/46785/exploitx_refsource_EXPLOIT-DB
• lists.fedoraproject.orgFEDORA-2019-1cfe24db5chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y43636TH4D6T46IC6N2RQVJTRFJAAYGA/vendor-advisoryx_refsource_FEDORA