CVE-2026-42503

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{"affected": [{"affectedData": [{"collectionURL": "https://pkg.go.dev", "defaultStatus": "unaffected", "packageName": "golang.org/x/tools/gopls", "product": "golang.org/x/tools/gopls", "vendor": "golang.org/x/tools", "versions": [{"lessThan": "0.22.0", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}], "source": "security@golang.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:golang:gopls:*:*:*:*:*:go:*:*", "matchCriteriaId": "F76C2737-024A-4EA0-BDE4-3A6520098E8E", "versionEndExcluding": "0.22.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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."}, {"lang": "es", "value": "gopls por defecto se comunica a trav\u00e9s de una tuber\u00eda. Sin embargo, las banderas -puerto y -listen son compatibles como medios de depuraci\u00f3n.\nSi a -listen se le da un valor sin un host expl\u00edcito (p. ej. :8080), o se usa -puerto, gopls escuchar\u00e1 en 0.0.0.0.\nComo resultado, los usuarios podr\u00edan inadvertidamente causar que gopls se enlace a 0.0.0.0.\nEsto puede permitir a una parte maliciosa en la misma red ejecutar c\u00f3digo arbitrariamente a trav\u00e9s de gopls."}], "id": "CVE-2026-42503", "lastModified": "2026-10-26T19:10:00.163", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42503", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-06T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-05-06T17:16:23.417", "references": [{"source": "security@golang.org", "tags": ["Patch"], "url": "https://go.dev/cl/774381"}, {"source": "security@golang.org", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://go.dev/issue/79211"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1327"}], "source": "security@golang.org", "type": "Secondary"}]}

{}

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