CVE-2020-26030 is a critical authentication bypass vulnerability affecting Zammad versions prior to 3.4.1. An unauthenticated attacker can exploit a flaw in the SSO endpoint, even when SSO is not configured, by crafting a specific header. This allows them to create fully authenticated sessions for any user, leading to complete compromise of confidentiality, integrity, and availability. While the CVSS score is 9.8 (Critical), there is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.0.0, < 3.4.1CPE matchmatch criteria | cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.