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      <title>CVE-2026-63373 — draw.io: OAuth CSRF via missing state validation on self-hosted deployments allows session token injection</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-63373</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; jgraph drawio&lt;/p&gt;
&lt;p&gt;draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.7, the OAuth callback handler in src/main/java/com/mxgraph/online/AbsAuth.java skips comparison of stateToken and cookieToken whenever IS_GAE is false, which affects self-hosted Docker and WAR deployments. An attacker can provide an authorization code for the attacker&amp;#39;s cloud-storage identity and induce a victim to visit a callback URL, causing the victim&amp;#39;s draw.io session to become authenticated as the attacker identity without a valid state binding. The shared handler affects Google Drive, OneDrive, GitHub, GitLab, and Dropbox integrations. The victim can then unknowingly perform cloud-storage actions under the attacker&amp;#39;s identity, causing session integrity loss and misattribution, but the identity binding does not itself grant access to existing victim cloud files. This issue is fixed in version 30.2.7.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; jgraph drawio&lt;/p&gt;
&lt;p&gt;draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.7, the OAuth callback handler in src/main/java/com/mxgraph/online/AbsAuth.java skips comparison of stateToken and cookieToken whenever IS_GAE is false, which affects self-hosted Docker and WAR deployments. An attacker can provide an authorization code for the attacker&amp;#39;s cloud-storage identity and induce a victim to visit a callback URL, causing the victim&amp;#39;s draw.io session to become authenticated as the attacker identity without a valid state binding. The shared handler affects Google Drive, OneDrive, GitHub, GitLab, and Dropbox integrations. The victim can then unknowingly perform cloud-storage actions under the attacker&amp;#39;s identity, causing session integrity loss and misattribution, but the identity binding does not itself grant access to existing victim cloud files. This issue is fixed in version 30.2.7.&lt;/p&gt;</content:encoded>
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