{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46430", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-13T22:18:22.830Z", "datePublished": "2026-05-26T16:41:42.059Z", "dateUpdated": "2026-05-26T18:57:12.882Z"}, "containers": {"cna": {"title": "Algernon: Auto-refresh SSE event server binds to all interfaces by default on Linux/macOS", "problemTypes": [{"descriptions": [{"cweId": "CWE-668", "lang": "en", "description": "CWE-668: Exposure of Resource to Wrong Sphere", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-1188", "lang": "en", "description": "CWE-1188: Insecure Default Initialization of Resource", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/xyproto/algernon/security/advisories/GHSA-gj84-924c-48fx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/xyproto/algernon/security/advisories/GHSA-gj84-924c-48fx"}], "affected": [{"vendor": "xyproto", "product": "algernon", "versions": [{"version": "< 1.17.7", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-26T16:41:42.059Z"}, "descriptions": [{"lang": "en", "value": "Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server bound to 0.0.0.0:5553 on Linux/macOS by default because the platform-dependent host default in engine/flags.go:39-46 set host = \"\" for non-Windows, and utils.JoinHostPort(\"\", \":5553\") resolves to \":5553\". This vulnerability is fixed in 1.17.7."}], "source": {"advisory": "GHSA-gj84-924c-48fx", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/xyproto/algernon/security/advisories/GHSA-gj84-924c-48fx", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-26T18:57:07.427124Z", "id": "CVE-2026-46430", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"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": "2026-05-26T18:57:12.882Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-46430", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-26T18:57:07.427124Z"}}}], "references": [{"url": "https://github.com/xyproto/algernon/security/advisories/GHSA-gj84-924c-48fx", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-26T18:57:00.677Z"}}], "cna": {"title": "Algernon: Auto-refresh SSE event server binds to all interfaces by default on Linux/macOS", "source": {"advisory": "GHSA-gj84-924c-48fx", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}], "affected": [{"vendor": "xyproto", "product": "algernon", "versions": [{"status": "affected", "version": "< 1.17.7"}]}], "references": [{"url": "https://github.com/xyproto/algernon/security/advisories/GHSA-gj84-924c-48fx", "name": "https://github.com/xyproto/algernon/security/advisories/GHSA-gj84-924c-48fx", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server bound to 0.0.0.0:5553 on Linux/macOS by default because the platform-dependent host default in engine/flags.go:39-46 set host = \"\" for non-Windows, and utils.JoinHostPort(\"\", \":5553\") resolves to \":5553\". This vulnerability is fixed in 1.17.7."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-668", "description": "CWE-668: Exposure of Resource to Wrong Sphere"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-1188", "description": "CWE-1188: Insecure Default Initialization of Resource"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-26T16:41:42.059Z"}}}, "cveMetadata": {"cveId": "CVE-2026-46430", "state": "PUBLISHED", "dateUpdated": "2026-05-26T18:57:12.882Z", "dateReserved": "2026-05-13T22:18:22.830Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-05-26T16:41:42.059Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "algernon", "vendor": "xyproto", "versions": [{"status": "affected", "version": "< 1.17.7"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server bound to 0.0.0.0:5553 on Linux/macOS by default because the platform-dependent host default in engine/flags.go:39-46 set host = \"\" for non-Windows, and utils.JoinHostPort(\"\", \":5553\") resolves to \":5553\". This vulnerability is fixed in 1.17.7."}], "id": "CVE-2026-46430", "lastModified": "2026-06-17T10:53:40.010", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-46430", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-26T18:57:07.427124Z", "version": "2.0.3"}}]}, "published": "2026-05-26T17:16:50.943", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/xyproto/algernon/security/advisories/GHSA-gj84-924c-48fx"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/xyproto/algernon/security/advisories/GHSA-gj84-924c-48fx"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-668"}, {"lang": "en", "value": "CWE-1188"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.17.7)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "algernon", "source": "cna", "vendor": "xyproto"}, "product": "algernon", "vendor": "xyproto"}], "created": "2026-05-26T19:15:13.717657+00:00", "updated": "2026-05-27T10:04:43.906755+00:00", "vendors": ["xyproto", "xyproto$PRODUCT$algernon"]}