Cryptographically weak CSRF tokens in Apache MyFaces
In the default configuration, Apache MyFaces Core versions 2.2.0 to 2.2.13, 2.3.0 to 2.3.7, 2.3-next-M1 to 2.3-next-M4, and 3.0.0-RC1 use cryptographically weak implicit and explicit cross-site request forgery (CSRF) tokens. Due to that limitation, it is possible (although difficult) for an attacker to calculate a future CSRF token value and to use that value to trick a user into executing unwanted actions on an application.
Mitigation: Existing web.xml configuration parameters can be used to direct MyFaces to use SecureRandom for CSRF token generation:
org.apache.myfaces.RANDOM_KEY_IN_VIEW_STATE_SESSION_TOKEN=secureRandom org.apache.myfaces.RANDOM_KEY_IN_CSRF_SESSION_TOKEN=secureRandom org.apache.myfaces.RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN=secureRandom
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apache.myfaces.core:myfaces-core-module | < 2.0.25, >= 2.1.0, < 2.1.19, >= 2.2.0, < 2.2.14, >= 2.3.0, < 2.3.8 | 2.0.25, 2.1.19, 2.2.14, 2.3.8 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-26296
- https://github.com/apache/myfaces/commit/cc6e1cc7b9aa17e52452f7f2657b3af9c421b2b2
- https://issues.apache.org/jira/browse/MYFACES-4373
- https://lists.apache.org/thread.html/r2b73e2356c6155e9ec78fdd8f72a4fac12f3e588014f5f535106ed9b%40%3Cannounce.apache.org%3E
- https://security.netapp.com/advisory/ntap-20210528-0007
- http://packetstormsecurity.com/files/161484/Apache-MyFaces-2.x-Cross-Site-Request-Forgery.html
- http://seclists.org/fulldisclosure/2021/Feb/66
- Weakness (CWE)
CWE-330, CWE-352- Platform
- Java / Kotlin (Maven)
- Package
org.apache.myfaces.core:myfaces-core-module- Disclosed
- 16.06.2021
- Updated
- 11.10.2026 13:19
Sources and licenses
OSV / GitHub Advisory Database - GHSA-gq67-pp9w-43gp - CC BY 4.0
Vulnerability history: org.apache.myfaces.core:myfaces-core-module
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 06.2021 05.2022
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- High 2
- Medium 1
Disclosures per year
- 2021: 1
- 2022: 2
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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