CVE-2021-42583: Use of a Broken or Risky Cryptographic Algorithm in Max Mazurov Maddy
Summary
CVE-2021-42583: Use of a Broken or Risky Cryptographic Algorithm in Max Mazurov Maddy. Affects github.com/foxcpp/maddy versions < 0.5.2. Fixed in 0.5.2. How to fix ↓
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Background
Max Mazurov Maddy is a Go package that provides a mail delivery agent (MDA) and mail filtering framework. It is designed to handle incoming and outgoing mail for various mail servers. The package is widely used in the Go ecosystem and is responsible for processing sensitive information such as email content and user credentials. However, a vulnerability has been discovered in versions prior to 0.5.2 that involves the use of a broken or risky cryptographic algorithm. This vulnerability poses a significant risk as it may lead to the exposure of sensitive information.
Vulnerability Detail
The vulnerability in Max Mazurov Maddy arises from the use of a broken or risky cryptographic algorithm. This algorithm is known to have weaknesses that can be exploited by attackers to decrypt or tamper with encrypted data. As a result, sensitive information such as email content, user credentials, or other confidential data processed by Max Mazurov Maddy may be exposed. This can have severe consequences, including unauthorized access to sensitive information, data breaches, and potential compromise of user accounts or systems. The vulnerability has been assigned the identifier CVE-2021-42583.
How To Fix
Latest published version: v0.9.6 as of 23 Oct 2026
go get github.com/foxcpp/maddy@v0.9.6Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
0.5.2
This is the first release that contains the fix.
go get github.com/foxcpp/maddy@v0.5.2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
The vulnerability in Max Mazurov Maddy involving the use of a broken or risky cryptographic algorithm poses a significant risk to the security of sensitive information. To mitigate this risk, it is crucial to update Max Mazurov Maddy to version 0.5.2 or later, which includes a fix for the vulnerability. Failure to address this vulnerability may result in the exposure of sensitive data and potential compromise of user accounts or systems. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for github.com/foxcpp/maddy →
FAQ
Max Mazurov Maddy is a Go package that provides a mail delivery agent (MDA) and mail filtering framework. It is widely used in the Go ecosystem for handling incoming and outgoing mail for various mail servers.
The vulnerability in Max Mazurov Maddy can lead to the exposure of sensitive information, including email content and user credentials. This can result in unauthorized access to sensitive data, data breaches, and potential compromise of user accounts or systems.
To fix this vulnerability, update Max Mazurov Maddy to version 0.5.2 or later. This version includes a fix for the broken or risky cryptographic algorithm. After updating, recompile and redeploy any applications or systems that use Max Mazurov Maddy.
No workaround has been provided for this vulnerability. It is recommended to update to the latest version of Max Mazurov Maddy to ensure the fix is applied.
The fix for this vulnerability can be obtained by updating Max Mazurov Maddy to version 0.5.2 or later. The update is available from the official GitHub repository or through the Go package manager.
Related vulnerabilities
Recent vulnerabilities recorded for github.com/foxcpp/maddy.
