CVE-2026-91201
Medium
Description
DocsGPT through 0.20.0 posts OAuth connector session tokens to a wildcard target origin in the callback-status endpoint without validating sender origin. Attackers can obtain session tokens and provider account emails by acting as window.opener during OAuth authorization, then use tokens to disconnect victims' cloud storage connectors.
SeverityMedium
CVSS5.4
Exploit probability—
ProductDocsGPT
PublishedSep 14, 2026
First seenSep 14, 2026
Weakness typeCWE-346CWE-346
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| arc53 DocsGPT | v ≤ 0.20.0 | — |
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