{"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":"2026-05-07T03:55:49.730Z"},"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. \nAs a result, users might inadvertently cause gopls to bind 0.0.0.0.\nThis can allow a malicious 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":"2026-05-06T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-42503"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-07T03:55:49.730Z"}}]}}