{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62317", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-13T19:27:58.314Z", "datePublished": "2026-08-19T19:41:23.800Z", "dateUpdated": "2026-08-19T19:41:23.800Z"}, "containers": {"cna": {"title": "Logto: ReDoS via unescaped user input in email subaddressing regex (blockSubaddressing)", "problemTypes": [{"descriptions": [{"cweId": "CWE-1333", "lang": "en", "description": "CWE-1333: Inefficient Regular Expression Complexity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/logto-io/logto/security/advisories/GHSA-qp7j-c3q2-g739", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/logto-io/logto/security/advisories/GHSA-qp7j-c3q2-g739"}, {"name": "https://github.com/logto-io/logto/pull/9106", "tags": ["x_refsource_MISC"], "url": "https://github.com/logto-io/logto/pull/9106"}, {"name": "https://github.com/logto-io/logto/commit/021381237511bc0d42f81d65df8b036b01f40547", "tags": ["x_refsource_MISC"], "url": "https://github.com/logto-io/logto/commit/021381237511bc0d42f81d65df8b036b01f40547"}, {"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": "2026-08-19T19:41:23.800Z"}, "descriptions": [{"lang": "en", "value": "Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's email subaddressing blocklist in packages/core/src/libraries/sign-in-experience/email-blocklist-policy.ts used the attacker-controlled domain from email input to construct subaddressingRegex when blockSubaddressing was enabled. The permissive emailRegEx accepted multiple at signs and regular expression metacharacters, and POST /api/experience/verification/verification-code could therefore cause catastrophic backtracking in subaddressingRegex.test(email). The resulting event-loop stall could make authentication, token issuance, SSO, and the administrative console unavailable. This issue is fixed in version 1.41.0."}], "source": {"advisory": "GHSA-qp7j-c3q2-g739", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "logto", "vendor": "logto-io", "versions": [{"status": "affected", "version": "< 1.41.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's email subaddressing blocklist in packages/core/src/libraries/sign-in-experience/email-blocklist-policy.ts used the attacker-controlled domain from email input to construct subaddressingRegex when blockSubaddressing was enabled. The permissive emailRegEx accepted multiple at signs and regular expression metacharacters, and POST /api/experience/verification/verification-code could therefore cause catastrophic backtracking in subaddressingRegex.test(email). The resulting event-loop stall could make authentication, token issuance, SSO, and the administrative console unavailable. This issue is fixed in version 1.41.0."}], "id": "CVE-2026-62317", "lastModified": "2026-08-19T20:17:19.890", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-08-19T20:17:19.890", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/logto-io/logto/commit/021381237511bc0d42f81d65df8b036b01f40547"}, {"source": "security-advisories@github.com", "url": "https://github.com/logto-io/logto/pull/9106"}, {"source": "security-advisories@github.com", "url": "https://github.com/logto-io/logto/releases/tag/v1.41.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/logto-io/logto/security/advisories/GHSA-qp7j-c3q2-g739"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1333"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}