{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42503", "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "state": "PUBLISHED", "assignerShortName": "Go", "dateReserved": "2026-04-28T00:21:12.792Z", "datePublished": "2026-05-06T16:20:01.428Z", "dateUpdated": "2026-05-06T17:08:32.834Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "shortName": "Go", "dateUpdated": "2026-05-06T16:20:01.428Z"}, "title": "Accidental binding to INADDR_ANY might lead to RCE in golang.org/x/tools/gopls", "datePublic": "2026-05-06T15:19:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-1327", "description": "CWE-1327 Binding to an unrestricted IP address", "type": "CWE"}]}], "affected": [{"vendor": "golang.org/x/tools", "product": "golang.org/x/tools/gopls", "collectionURL": "https://pkg.go.dev", "packageName": "golang.org/x/tools/gopls", "versions": [{"status": "affected", "version": "0.0.0", "lessThan": "0.22.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging.\nIf -listen is given a value without an explicit host (e.g. :8080), or -port is used, gopls will listen on 0.0.0.0.\u00a0\nAs a result, users might\u00a0inadvertently cause gopls to bind 0.0.0.0.\nThis can allow a\u00a0malicious party on the same network to execute code arbitrarily via gopls.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging.<br>If -listen is given a value without an explicit host (e.g. :8080), or -port is used, gopls will listen on 0.0.0.0.&nbsp;<br>As a result, users might&nbsp;inadvertently cause gopls to bind 0.0.0.0.<br>This can allow a&nbsp;malicious party on the same network to execute code arbitrarily via gopls."}]}], "references": [{"url": "https://go.dev/issue/79211"}, {"url": "https://go.dev/cl/774381"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-05-06T17:08:29.529111Z", "id": "CVE-2026-42503", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-06T17:08:32.834Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging.\nIf -listen is given a value without an explicit host (e.g. :8080), or -port is used, gopls will listen on 0.0.0.0.\u00a0\nAs a result, users might\u00a0inadvertently cause gopls to bind 0.0.0.0.\nThis can allow a\u00a0malicious party on the same network to execute code arbitrarily via gopls."}], "id": "CVE-2026-42503", "lastModified": "2026-05-06T17:16:23.417", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-05-06T17:16:23.417", "references": [{"source": "security@golang.org", "url": "https://go.dev/cl/774381"}, {"source": "security@golang.org", "url": "https://go.dev/issue/79211"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1327"}], "source": "security@golang.org", "type": "Secondary"}]}

{}

{"created": "2026-05-06T17:30:08.252754+00:00", "updated": "2026-05-06T17:30:08.252766+00:00", "vendors": []}