CVE-2021-29435 — Cross-Site Request Forgery (CSRF) in trestle-auth...

HIGH

Cross-Site Request Forgery (CSRF) in trestle-auth

Published April 13, 2021Updated July 8, 2026Source: osv

Summary

### Impact 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. ### Patches The vulnerability has been fixed in trestle-auth 0.4.2 released to RubyGems. ### For more information If you have any questions or comments about this advisory: * Open an issue in [trestle-auth](https://github.com/TrestleAdmin/trestle-auth/issues) * Email the maintainer at [sam@sampohlenz.com](mailto:sam@sampohlenz.com)

Advisory Timeline

First published April 13, 2021 (2008 days ago).
Last revised July 8, 2026 — 1912 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler

Update trestle-auth to 0.4.2 or later

gem install trestle-auth -v 0.4.2

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: rubygems (1).

Package	Ecosystem	Affected	Fixed In
trestle-auth	rubygems	0.4.0, 0.4.1	0.4.2

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-352
Cross-Site Request Forgery (CSRF)MITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.1 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

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

References

Frequently Asked Questions

What is CVE-2021-29435?: Cross-Site Request Forgery (CSRF) in trestle-auth This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.1/10).
How do I check if my project is affected by CVE-2021-29435?: CVE-2021-29435 affects trestle-auth. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2021-29435 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

8.1

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-h8hx-2c5r-32cf

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