CVE WatchJul 13, 2026

CVE-2026-54714

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, @logto/core reflected the SAML RelayState, SAMLR

CVSS

6.1

Medium

EPSS

0.3%

p17

KEV

—

Exploit Today

0-100

Published: Jul 10, 2026 · Last modified: Jul 13, 2026 · CWE-79

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-07-112026-07-20

Technical description

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, @logto/core reflected the SAML RelayState, SAMLResponse, and actionUrl into a Logto-origin auto-submit HTML form in packages/core/src/saml-application/SamlApplication/utils.ts without HTML-attribute escaping. A SAML application flow with a crafted RelayState from GET or POST /api/saml/:id/authn could inject script that runs on the Logto tenant origin after the user completes login. This issue is fixed in version 1.41.0.

Official references

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