Cross-Site Request Forgery (CSRF) in trestle-auth
Priority LOW 36CWE-352Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-352.
Summary
trestle-auth is an authentication plugin for the Trestle admin framework. A vulnerability in trestle-auth versions 0.4.0 and 0.4.1 allows an attacker to create a form that will bypass Rails' built-in CSRF protection when submitted by a victim with a trestle-auth admin session. This potentially allows an attacker to alter protected data, including admin account credentials. The vulnerability has been fixed in trestle-auth 0.4.2 released to RubyGems.
Why it matters now
EPSS 0.00663 51st percentileScored 2026-11-07
Fix Fixed trestle-auth (TrestleAdmin): 0.4.2trestle-auth (RubyGems): 0.4.2
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 |
|---|---|---|---|---|---|
| TrestleAdmin | trestle-auth | 0.4.0 to before 0.4.2 | 0.4.2 | Patch available | CNA |
| — | trestle-auth (RubyGems) | 0.4.0 to before 0.4.2 | 0.4.2 | Patch available | GHSA-h8hx-2c5r-32cf |
- trestle-auth VendorTrestleAdmin Affected 0.4.0 to before 0.4.2 Fixed in 0.4.2 Patch available CNA
- trestle-auth (RubyGems) Vendor— Affected 0.4.0 to before 0.4.2 Fixed in 0.4.2 Patch available GHSA-h8hx-2c5r-32cf
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:trestle-auth_project:trestle-auth:0.4.0:*:*:*:*:ruby:*:* | 0.4.0 | Vulnerable | Trestle-auth Project |
| cpe:2.3:a:trestle-auth_project:trestle-auth:0.4.1:*:*:*:*:ruby:*:* | 0.4.1 | Vulnerable | Trestle-auth Project |
- cpe:2.3:a:trestle-auth_project:trestle-auth:0.4.0:*:*:*:*:ruby:*:* Versions 0.4.0 Vulnerable ·Trestle-auth Project
- cpe:2.3:a:trestle-auth_project:trestle-auth:0.4.1:*:*:*:*:ruby:*:* Versions 0.4.1 Vulnerable ·Trestle-auth Project
Remediation
- Fix · CNA trestle-auth (TrestleAdmin) Fixed in 0.4.2
- Fix · GHSA-h8hx-2c5r-32cf trestle-auth (RubyGems) Fixed in 0.4.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-29435
- 2026-10-03 Alias added: GHSA-h8hx-2c5r-32cf
- 2026-10-06 EPSS moved to the 50th–90th percentile
References
Advisory 3
Sources
- CVE-2021-29435 · CVE Program
- CVE-2021-29435 · NVD
- FIRST EPSS
- GHSA-h8hx-2c5r-32cf · GitHub Advisory Database · CC BY 4.0
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