CVE-2026-42195

low

Published 2026-05-08 · Modified 2026-05-12

CVSS v3

3.4

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N

CVSS v2

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VIR risk

3.4

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.

Predictions

Exploit likelihood

45%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

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

CWEs

CWE-200 CWE-601

Verify integrity in audit chain (admin only). AS-IS.