draw.io is a configurable diagramming and whiteboarding application. Prior to version 29.7.9, the draw.io client accepts a ?gitlab= URL parameter that overrides the GitLab server URL used during OAuth sign-in. A crafted link causes the user's click on draw.io's "Authorize in GitLab" dialog to open a popup on the attacker-controlled host instead of gitlab.com. This can lead to credential fishing and session state token exfiltration. This issue has been patched in version 29.7.9.
Metrics
Affected Vendors & Products
References
History
Fri, 08 May 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | draw.io is a configurable diagramming and whiteboarding application. Prior to version 29.7.9, the draw.io client accepts a ?gitlab= URL parameter that overrides the GitLab server URL used during OAuth sign-in. A crafted link causes the user's click on draw.io's "Authorize in GitLab" dialog to open a popup on the attacker-controlled host instead of gitlab.com. This can lead to credential fishing and session state token exfiltration. This issue has been patched in version 29.7.9. | |
| Title | Unvalidated gitlab URL parameter redirects OAuth authorize step to attacker-controlled host | |
| Weaknesses | CWE-200 CWE-601 |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-08T21:22:40.678Z
Reserved: 2026-04-25T01:53:21.584Z
Link: CVE-2026-42195
No data.
Status : Received
Published: 2026-05-08T22:16:31.410
Modified: 2026-05-08T22:16:31.410
Link: CVE-2026-42195
No data.
OpenCVE Enrichment
Updated: 2026-05-08T22:30:18Z