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CVE-2026-42195— Unvalidated gitlab URL parameter redirects OAuth authorize step to attacker-controlled host

CVSS 3.4 · Low EPSS 0.03% · P8
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I. Basic Information for CVE-2026-42195

Vulnerability Information
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Vulnerability Title
Unvalidated gitlab URL parameter redirects OAuth authorize step to attacker-controlled host
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Vulnerability Title
draw.io 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
draw.io是draw.io开源的一款可配置的图表绘制和白板应用。 draw.io 29.7.9之前版本存在信息泄露漏洞，该漏洞源于接受?gitlab=URL参数覆盖OAuth登录期间使用的GitLab服务器URL，可能导致用户点击授权对话框时弹出窗口指向攻击者控制的主机，导致凭据钓鱼和会话状态令牌泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
jgraphdrawio < 29.7.9 -

II. Public POCs for CVE-2026-42195

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III. Intelligence Information for CVE-2026-42195

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IV. Related Vulnerabilities

Same vendor: jgraph
Same weakness: CWE-601

V. Comments for CVE-2026-42195

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