CVE-2026-54714 | Logto is the modern, open-source auth infrastructure for Saa… | CVSS 6.1 MEDIUM

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.

Metadata

CVE ID: CVE-2026-54714
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-15 22:58 UTC
Published: 2026-07-10 19:54 UTC
Last updated: 2026-07-10 19:54 UTC
Primary CWE: CWE-79
CWE-79: Improper Neutralization of Input During Web Page Gen…
Vendor / Product: logto-io / logto
Sources: cve.org · NVD

Severity & Metrics

6.1 MEDIUM CVSS 3.1

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

Affected products (1)

Vendor	Product	Platform	Versions
logto-io	logto	—	< 1.41.0

Weakness (CWE)

CWE	Source	Description
CWE-79	cna	CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.1	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References (4)

https://github.com/logto-io/logto/security/advisories/GHSA-cpm5-w86q-w85f https://github.com/logto-io/logto/security/advisories/GHSA-cpm5-w86q-w85f
https://github.com/logto-io/logto/pull/9008 https://github.com/logto-io/logto/pull/9008
https://github.com/logto-io/logto/commit/209fa0a5cbe8522f9cf31873239dc6424099bb5e https://github.com/logto-io/logto/commit/209fa0a5cbe8522f9cf31873239dc6424099bb5e
https://github.com/logto-io/logto/releases/tag/v1.41.0 https://github.com/logto-io/logto/releases/tag/v1.41.0