Code injection in https://github.com/rails/rails
Priority HIGH 79CWE-94Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-94.
Summary
The is a code injection vulnerability in versions of Rails prior to 5.0.1 that wouldallow an attacker who controlled the `locals` argument of a `render` call to perform a RCE.
Why it matters now
EPSS 0.82465 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed actionview (RubyGems): 4.2.11.3
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | https://github.com/rails/rails | Fixed in 4.2.11.2 | — | No fix listed | CNA |
| — | actionview (RubyGems) | before 4.2.11.3 | 4.2.11.3 | Patch available | GHSA-cr3x-7m39-c6jq |
- https://github.com/rails/rails Vendor— Affected Fixed in 4.2.11.2 Fixed in — No fix listed CNA
- actionview (RubyGems) Vendor— Affected before 4.2.11.3 Fixed in 4.2.11.3 Patch available GHSA-cr3x-7m39-c6jq
Remediation
- Fix · GHSA-cr3x-7m39-c6jq actionview (RubyGems) Fixed in 4.2.11.3 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 2 products
- CloudForms Management Engine 5
- Red Hat Satellite 6
Timeline
- 2026-10-02 Threatist record created from CVE-2020-8163
- 2026-10-03 Alias added: GHSA-cr3x-7m39-c6jq
References
Advisory 3
Sources
- CVE-2020-8163 · CVE Program
- CVE-2020-8163 · NVD
- FIRST EPSS
- GHSA-cr3x-7m39-c6jq · GitHub Advisory Database · CC BY 4.0
- CVE-2020-8163 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences