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Fri, 25 Sep 2026 20:30:00 +0000
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ssvc
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Fri, 25 Sep 2026 18:30:00 +0000
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| Description | 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. | |
| Title | Zammad: Microsoft Graph error logs expose partially masked OAuth access tokens | |
| Weaknesses | CWE-116 CWE-532 |
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cvssV4_0
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Subscriptions
No data.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-25T18:42:12.452Z
Reserved: 2026-07-15T22:19:06.906Z
Link: CVE-2026-63208
Updated: 2026-09-25T18:42:09.062Z
Status : Received
Published: 2026-09-25T19:17:55.347
Modified: 2026-09-25T19:17:55.347
Link: CVE-2026-63208
No data.
OpenCVE Enrichment
Updated: 2026-09-25T20:15:14Z