{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77582", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-20T20:35:30.148Z", "datePublished": "2026-09-21T16:43:43.175Z", "dateUpdated": "2026-09-23T19:16:39.000Z"}, "containers": {"cna": {"title": "Tinyauth: User enumeration attack by timing oracle", "problemTypes": [{"descriptions": [{"cweId": "CWE-208", "lang": "en", "description": "CWE-208: Observable Timing Discrepancy", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/tinyauthapp/tinyauth/security/advisories/GHSA-456h-ww26-f758", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/tinyauthapp/tinyauth/security/advisories/GHSA-456h-ww26-f758"}, {"name": "https://github.com/tinyauthapp/tinyauth/pull/1004", "tags": ["x_refsource_MISC"], "url": "https://github.com/tinyauthapp/tinyauth/pull/1004"}, {"name": "https://github.com/tinyauthapp/tinyauth/commit/c22925c2fba981875d0a2b09dd3ee41c0ae4c310", "tags": ["x_refsource_MISC"], "url": "https://github.com/tinyauthapp/tinyauth/commit/c22925c2fba981875d0a2b09dd3ee41c0ae4c310"}, {"name": "https://github.com/tinyauthapp/tinyauth/releases/tag/v5.1.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/tinyauthapp/tinyauth/releases/tag/v5.1.0"}], "affected": [{"vendor": "tinyauthapp", "product": "tinyauth", "versions": [{"version": "< 5.1.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-21T16:43:43.175Z"}, "descriptions": [{"lang": "en", "value": "Tinyauth is an authentication and authorization server. Prior to 5.1.0, Tinyauth exposes a remotely observable timing difference between authentication attempts for existing and nonexistent local usernames. internal/controller/user_controller.go loginHandler and internal/middleware/context_middleware.go basicAuth return quickly after internal/service/auth_service.go reports a missing user, while an existing user causes bcrypt password verification work. Repeated measurements can therefore disclose valid usernames and support targeted credential attacks. This issue is fixed in version 5.1.0."}], "source": {"advisory": "GHSA-456h-ww26-f758", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/tinyauthapp/tinyauth/security/advisories/GHSA-456h-ww26-f758", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-23T19:16:31.589447Z", "id": "CVE-2026-77582", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-23T19:16:39.000Z"}}]}}

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{}

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