Information disclosure through error messages in https://github.com/rails/rails
Priority MEDIUM 40CWE-209Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 1 fixed, 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-209.
Summary
A possible information disclosure / unintended method execution vulnerability in Action Pack >= 2.0.0 when using the `redirect_to` or `polymorphic_url`helper with untrusted user input.
Why it matters now
EPSS 0.0405 90th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial actionpack (RubyGems): 6.0.3.7, 6.1.3.2, 5.2.6 +1Red Hat: 1 advisoryRed Hat: 1 fixed, 3 without a fix
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 | 6.1.3.1, 6.0.3.7, 5.2.4.6, 5.2.6 | — | No fix listed | CNA |
| — | actionpack (RubyGems) | 6.0.0 to before 6.0.3.7 | 6.0.3.7 | Patch available | GHSA-hjg4-8q5f-x6fm |
| — | actionpack (RubyGems) | 6.1.0 to before 6.1.3.2 | 6.1.3.2 | Patch available | GHSA-hjg4-8q5f-x6fm |
| — | actionpack (RubyGems) | 5.2.5 to before 5.2.6 | 5.2.6 | Patch available | GHSA-hjg4-8q5f-x6fm |
| — | actionpack (RubyGems) | 2.0.0 to before 5.2.4.6 | 5.2.4.6 | Patch available | GHSA-hjg4-8q5f-x6fm |
- https://github.com/rails/rails Vendor— Affected 6.1.3.1, 6.0.3.7, 5.2.4.6, 5.2.6 Fixed in — No fix listed CNA
- actionpack (RubyGems) Vendor— Affected 6.0.0 to before 6.0.3.7 Fixed in 6.0.3.7 Patch available GHSA-hjg4-8q5f-x6fm
- actionpack (RubyGems) Vendor— Affected 6.1.0 to before 6.1.3.2 Fixed in 6.1.3.2 Patch available GHSA-hjg4-8q5f-x6fm
- actionpack (RubyGems) Vendor— Affected 5.2.5 to before 5.2.6 Fixed in 5.2.6 Patch available GHSA-hjg4-8q5f-x6fm
- actionpack (RubyGems) Vendor— Affected 2.0.0 to before 5.2.4.6 Fixed in 5.2.4.6 Patch available GHSA-hjg4-8q5f-x6fm
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:* | 5.2.0.0 to before 5.2.4.6; 6.0.0.0 to before 6.0.3.7; 6.1.0.0 to before 6.1.3.1 | Vulnerable | Rails |
| cpe:2.3:a:rubyonrails:actionpack_page-caching:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Rails |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
- cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:* Versions 5.2.0.0 to before 5.2.4.6; 6.0.0.0 to before 6.0.3.7; 6.1.0.0 to before 6.1.3.1 Vulnerable ·Rails
- cpe:2.3:a:rubyonrails:actionpack_page-caching:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Rails
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
Remediation
- Fix · GHSA-hjg4-8q5f-x6fm actionpack (RubyGems) Fixed in 6.0.3.7 Advisory →
- Fix · GHSA-hjg4-8q5f-x6fm actionpack (RubyGems) Fixed in 6.1.3.2 Advisory →
- Fix · GHSA-hjg4-8q5f-x6fm actionpack (RubyGems) Fixed in 5.2.6 Advisory →
- Fix · GHSA-hjg4-8q5f-x6fm actionpack (RubyGems) Fixed in 5.2.4.6 Advisory →
Red Hat 1 advisory
- RHSA-2021:4702 Released 2021-11-16 · Red Hat rating ModerateSatellite 6.10 Release
- Red Hat Satellite 6.10 candlepin-4.0.9-1.el7sat, foreman-2.5.2.17-2.el7sat, python-aiohttp-3.7.4-1.el7pc +14
- Red Hat Satellite Capsule 6.10 foreman-2.5.2.17-2.el7sat, python-aiohttp-3.7.4-1.el7pc, python-ecdsa-0.13.3-2.el7pc +9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| CloudForms Management Engine 5 | Affected | No fix planned: Will not fix |
| Red Hat 3scale API Management Platform 2 | Affected | No fix yet |
| Red Hat Satellite 6 | Affected | No fix planned: Will not fix |
| Red Hat Satellite 6.10 | Fixed | RHSA-2021:4702 |
Not affected: 2 products
- Red Hat Satellite 6.10
- Red Hat Satellite Capsule 6.10
Timeline
- 2026-10-02 Threatist record created from CVE-2021-22885
- 2026-10-03 Alias added: GHSA-hjg4-8q5f-x6fm
References
Advisory 3
Sources
- CVE-2021-22885 · CVE Program
- CVE-2021-22885 · NVD
- FIRST EPSS
- GHSA-hjg4-8q5f-x6fm · GitHub Advisory Database · CC BY 4.0
- CVE-2021-22885 · 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