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.
Published: 2026-09-14
Score: 5.3 Medium
EPSS: n/a
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 14 Sep 2026 22:30:00 +0000

Type Values Removed Values Added
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.
Title DocsGPT through 0.20.0 OAuth Token Disclosure via Wildcard postMessage
First Time appeared Arc53
Arc53 docsgpt
Weaknesses CWE-346
CPEs cpe:2.3:a:arc53:docsgpt:*:*:*:*:*:*:*:*
Vendors & Products Arc53
Arc53 docsgpt
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-14T22:10:58.067Z

Reserved: 2026-09-14T21:55:44.093Z

Link: CVE-2026-91201

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-14T23:19:00.783

Modified: 2026-09-14T23:19:00.783

Link: CVE-2026-91201

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses