Vulnerability 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.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/jgraph/drawio/issues/493
- https://github.com/jgraph/drawio/releases/tag/v29.7.9
- https://github.com/jgraph/drawio/security/advisories/GHSA-8x7j-m8px-7p8x
FAQ
What is CVE-2026-42195?
CVE-2026-42195 is a vulnerability with a CVSS score of 3.4 (LOW). 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...
How severe is CVE-2026-42195?
CVE-2026-42195 has been rated LOW with a CVSS base score of 3.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42195?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.