CVE-2026-42195
Unvalidated gitlab URL parameter redirects OAuth authorize step to attacker-controlled host
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.
INFO
Published Date :
May 8, 2026, 10:16 p.m.
Last Modified :
May 8, 2026, 10:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-42195
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | MITRE-CVE |
Solution
- Update draw.io to version 29.7.9 or later.
- Remove the GitLab URL override parameter.
- Educate users about phishing risks.
- Monitor for suspicious OAuth popups.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-42195.
| URL | Resource |
|---|---|
| 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 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-42195 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-42195
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-42195 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-42195 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
May. 08, 2026
Action Type Old Value New Value 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. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N Added CWE CWE-200 Added CWE CWE-601 Added Reference https://github.com/jgraph/drawio/issues/493 Added Reference https://github.com/jgraph/drawio/releases/tag/v29.7.9 Added Reference https://github.com/jgraph/drawio/security/advisories/GHSA-8x7j-m8px-7p8x