{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55789","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-17T14:40:28.380Z","datePublished":"2026-07-10T19:55:37.360Z","dateUpdated":"2026-07-10T19:55:37.360Z"},"containers":{"cna":{"title":"Logto: SAML IdP injects user-controlled profile attributes raw into signed assertions, allowing privilege escalation at relying Service Providers","problemTypes":[{"descriptions":[{"cweId":"CWE-91","lang":"en","description":"CWE-91: XML Injection (aka Blind XPath Injection)","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-1395","lang":"en","description":"CWE-1395: Dependency on Vulnerable Third-Party Component","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/logto-io/logto/security/advisories/GHSA-vfpw-vq44-4p63","tags":["x_refsource_CONFIRM"],"url":"https://github.com/logto-io/logto/security/advisories/GHSA-vfpw-vq44-4p63"},{"name":"https://github.com/logto-io/logto/pull/9107","tags":["x_refsource_MISC"],"url":"https://github.com/logto-io/logto/pull/9107"},{"name":"https://github.com/logto-io/logto/commit/9097054860f0d638d90778d3dcde2ba050b844b6","tags":["x_refsource_MISC"],"url":"https://github.com/logto-io/logto/commit/9097054860f0d638d90778d3dcde2ba050b844b6"},{"name":"https://github.com/logto-io/logto/releases/tag/v1.41.0","tags":["x_refsource_MISC"],"url":"https://github.com/logto-io/logto/releases/tag/v1.41.0"}],"affected":[{"vendor":"logto-io","product":"logto","versions":[{"version":"< 1.41.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-10T19:55:37.360Z"},"descriptions":[{"lang":"en","value":"Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's self-hosted SAML application IdP built the signed SAML response and assertion by string-substituting user-controlled profile attributes such as name, email, and custom attribute-mapping values into element-text placeholders of a SAML XML template using samlify 2.10.0, which left those placeholders unescaped. An authenticated low-privilege user could place XML markup in a profile attribute so Logto signed a forged SAML attribute, such as an arbitrary role, allowing privilege escalation at relying Service Providers that authorize on SAML attributes. This issue is fixed in version 1.41.0."}],"source":{"advisory":"GHSA-vfpw-vq44-4p63","discovery":"UNKNOWN"}}}}