Security readout for executives and security teams
CVE-2019-5418 lets an unauthenticated remote attacker make vulnerable Ruby on Rails Action View applications disclose arbitrary local file contents through specially crafted Accept headers. This can expose secrets, configuration files, source code, or credentials. CISA KEV status means known exploitation exists, so internet-facing Rails apps should be treated as urgent. Exposure is most likely in legacy Ruby on Rails applications using vulnerable Action View versions, especially public web applications reachable over the network. Packaged Rails deployments from Debian, Red Hat, Fedora, and openSUSE may also require vendor-specific updates. Treat this as urgent for any legacy or internet-facing Rails estate. The main business risk is confidential file exposure, including application secrets that can enable broader compromise. KEV status raises remediation priority above ordinary backlog handling. Mitigation focus: Upgrade Rails or Action View to a fixed version named by vendor guidance.; Apply operating system vendor security updates for packaged Rails deployments.; Prioritize internet-facing Rails applications and admin portals..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2019-5418 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 46585CVE reference · exploit, x_refsource_EXPLOIT-DB
- https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/CVE reference · x_refsource_CONFIRM
- https://groups.google.com/forum/#%21topic/rubyonrails-security/pFRKI96Sm8QCVE reference · x_refsource_CONFIRM
- [debian-lts-announce] 20190331 [SECURITY] [DLA 1739-1] rails security updateCVE reference · mailing-list, x_refsource_MLIST
- RHSA-2019:0796CVE reference · vendor-advisory, x_refsource_REDHAT
- FEDORA-2019-1cfe24db5cCVE reference · vendor-advisory, x_refsource_FEDORA
- RHSA-2019:1149CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2019:1147CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2019:1289CVE reference · vendor-advisory, x_refsource_REDHAT
- https://web.archive.org/web/20190313201629/https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5418CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.