CVE-2020-26030
CRITICAL
9.8
CVSS Score
Published: December 28, 2020 at 07:57 AM UTC
Updated: June 17, 2026 at 03:07 AM UTC
1 product affected across 1 vendorZammad
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Severity
CRITICAL9.8
Exploit prediction
EPSS 1%
Description
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://zammad.com/news/security-advisory-zaa-2020-18CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-287
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