---
title: "CVE-2026-63203: Logto - Broken Access Control"
description: "Logto 1.31.0 to 1.42.0 contains an information disclosure vulnerability caused by missing scope validation in Account API handlers, letting attackers with same-user openid tokens retrieve stored SSO provider access tokens, exploit requires federated token-set storage enabled and user authenticated via supported connector."
url: https://panop.io/threat-heartbeat/CVE-2026-63203/
---

# CVE-2026-63203 Logto - Broken Access Control

Logto 1.31.0 to 1.42.0 contains an information disclosure vulnerability caused by missing scope validation in Account API handlers, letting attackers with same-user openid tokens retrieve stored SSO provider access tokens, exploit requires federated token-set storage enabled and user authenticated via supported connector.

CVSS base score 7.6 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.31% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-63203)

## Details

Type

Broken Access Control

Impact

Information Disclosure

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Published

24 September 2026

Updated

15 October 2026

Weakness

[CWE-862](https://cwe.mitre.org/data/definitions/862.html)

## Vendor fix

Update to version 1.42.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-63203](https://nvd.nist.gov/vuln/detail/CVE-2026-63203)
- [https://github.com/logto-io/logto/commit/b560d17a4da4c25da95e3c73af4485d18ab7c224](https://github.com/logto-io/logto/commit/b560d17a4da4c25da95e3c73af4485d18ab7c224)
- [https://github.com/logto-io/logto/pull/9116](https://github.com/logto-io/logto/pull/9116)
- [https://github.com/logto-io/logto/releases/tag/v1.42.0](https://github.com/logto-io/logto/releases/tag/v1.42.0)
- [https://github.com/logto-io/logto/security/advisories/GHSA-6g9q-qrx7-3jxf](https://github.com/logto-io/logto/security/advisories/GHSA-6g9q-qrx7-3jxf)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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