CVE-2026-63208

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when a Microsoft Graph request fails, Zammad logs the error including the authentication token used to access the mailbox. The system attempts to hide this token in the log, but the masking is incomplete: for the token format Microsoft uses (JWT), only the first part is hidden, while the remaining parts remain readable in plain text. A Zammad admin with Microsoft Graph channel access can view these logs and see the partial token, which may reveal sensitive claims such as the account scope, tenant, or timing, and could assist in reconstructing the full token while it is still valid. This issue is fixed in version 7.1.2.

CVSS

No CVSS.

References

Link	Resource
https://github.com/zammad/zammad/commit/2be46473eee405cc65b86a85d17059802e658532
https://github.com/zammad/zammad/security/advisories/GHSA-qh8m-g5vr-7272

Configurations

No configuration.

History

25 Sep 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-25 19:17

Updated : 2026-09-28 14:45

NVD link : CVE-2026-63208

Mitre link : CVE-2026-63208

CVE.ORG link : CVE-2026-63208

JSON object : View

Products Affected

No product.

CWE

CWE-116

Improper Encoding or Escaping of Output

CWE-532

Insertion of Sensitive Information into Log File

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