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    CVE-2026-82263

    Logto through 1.42.0 contains a server-side request forgery vulnerability in the OIDC SSO connector creation endpoint that fails to validate the issuer URL parameter. Tenant administrators with Management API credentials can supply arbitrary internal URLs to trigger HTTP GET requests to private network services, with response content returned in API responses.

    Published:Aug 28, 2026
    Last Modified:Aug 28, 2026
    EPS:Aug 28, 2026
    EPSS Score:
    CVSS Score:6.8

    Affected Products

    Vendor
    Logto-io
    Product
    Logto

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    Related CVEs

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    CVE-2026-15611 (CVSS 9.1) — Logto allows unverified email-based SSO account linking, enabling an attacker to register an identity at a per…
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    CVE-2026-15614 (CVSS 7.5) — Logto silently fails to delete IdP-initiated SAML sessions, enabling session replay and reuse within the sessi…
    CVE-2026-15615 (CVSS 7.5) — Logto omits validation of the SAML <Conditions> element, enabling attackers to strip time and audience restric…
    CVE-2026-15616 (CVSS 9.1) — Logto does not enforce locally configured MFA during SSO authentication, allowing users to bypass second-facto…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High