VulnerabilityModified
CVE-2020-26030
There is an authentication bypass in the SSO endpoint via a crafted header, when SSO is not configured.
CRITICAL 9.8EPSS 1.33%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.33% probability · 70th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- zammad/zammad
- Source
- cve@mitre.org
References
- https://zammad.com/news/security-advisory-zaa-2020-18Vendor Advisory
- https://zammad.com/news/security-advisory-zaa-2020-18Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.