CVE-2020-26030
First published: Mon Dec 28 2020(Updated: )
An issue was discovered in Zammad before 3.4.1. There is an authentication bypass in the SSO endpoint via a crafted header, when SSO is not configured. An attacker can create a valid and authenticated session that can be used to perform any actions in the name of other users.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zammad Zammad | >=1.0.0<3.4.1 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this issue in Zammad?
The vulnerability ID for this issue in Zammad is CVE-2020-26030.
What is the severity of CVE-2020-26030?
The severity of CVE-2020-26030 is critical with a CVSS score of 9.8.
How does the authentication bypass in the SSO endpoint work?
The authentication bypass in the SSO endpoint occurs when a crafted header is used, bypassing the authentication process when SSO is not configured.
Which versions of Zammad are affected by CVE-2020-26030?
Zammad versions from 1.0.0 to 3.4.1 are affected by CVE-2020-26030.
How can an attacker exploit CVE-2020-26030?
An attacker can exploit CVE-2020-26030 by creating a valid and authenticated session, allowing them to perform any actions in the name of other users.
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