Home/CVE/An issue was discovered in Zammad before 3.5.1. An Agent with Customer permissions in a Group can bypass intended access
CVE

CVE-2020-29158

An issue was discovered in Zammad before 3.5.1. An Agent with Customer permissions in a Group can bypass intended access

An issue was discovered in Zammad before 3.5.1. An Agent with Customer permissions in a Group can bypass intended access control on internal Articles via the Ticket detail view.

MEDIUM · CVSS 4.3 EPSS 0.00112
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-862Missing Authorization
▤

Affected Products & Versions

1
zammad< 3.5.1
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Dec 2020 · 08:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/zammad/zammad/commit/cf5a5e396058d4b134dd33d0a62b11c1733c98abPatchThird Party Advisory
https://zammad.com/en/advisories/zaa-2020-23Vendor Advisory
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