CVEvulnerability

CVE-2020-26030

9.8 CRITICAL Published 2020-12-28 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-12-28
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-287

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.

Affected configurations

• zammad zammad (>= 1.0.0 < 3.4.1)

Related

Weakness · CWE (1)

  • CWE-287 Improper Authentication weakness

References