{"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": "2026-05-26T16:41:42.059Z"}, "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"}}}}

{}

{"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": "2026-05-26T17:16:50.943", "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"}]}, "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"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-668"}, {"lang": "en", "value": "CWE-1188"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}