{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-48854", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-05-25T20:44:10.697Z", "datePublished": "2026-06-15T21:55:23.629Z", "dateUpdated": "2026-06-15T21:55:23.629Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:elixir-grpc:grpc:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.GRPC.Server.Adapters.Cowboy.Handler'"], "packageName": "grpc", "packageURL": "pkg:hex/grpc", "product": "grpc", "programFiles": ["lib/grpc/server/adapters/cowboy/handler.ex"], "programRoutines": [{"name": "'Elixir.GRPC.Server.Adapters.Cowboy.Handler':read_full_body/3"}], "repo": "https://github.com/elixir-grpc/grpc", "vendor": "elixir-grpc", "versions": [{"lessThan": "1.0.0", "status": "affected", "version": "0.3.1", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:elixir-grpc:grpc:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.GRPC.Server.Adapters.Cowboy.Handler'"], "packageName": "elixir-grpc/grpc", "packageURL": "pkg:github/elixir-grpc/grpc", "product": "grpc", "programFiles": ["lib/grpc/server/adapters/cowboy/handler.ex"], "programRoutines": [{"name": "'Elixir.GRPC.Server.Adapters.Cowboy.Handler':read_full_body/3"}], "repo": "https://github.com/elixir-grpc/grpc", "vendor": "elixir-grpc", "versions": [{"lessThan": "49e18c3ec6bb9afe2f712caad3dbab5c56a68a00", "status": "affected", "version": "d1abe70a6cad6dac4a3f8235d883d7c896989560", "versionType": "git"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:elixir-grpc:grpc:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.0.0", "versionStartIncluding": "0.3.1", "vulnerable": true}], "operator": "OR"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Peter Ullrich"}, {"lang": "en", "type": "remediation developer", "value": "Paulo Valente"}, {"lang": "en", "type": "analyst", "value": "Jonatan M\u00e4nnchen"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Allocation of Resources Without Limits or Throttling vulnerability in elixir-grpc grpc allows unauthenticated attackers to exhaust the BEAM's memory and crash the server by streaming a large or slow-trickle unary request body.</p><p><tt>'Elixir.GRPC.Server.Adapters.Cowboy.Handler':read_full_body/3</tt> (<tt>lib/grpc/server/adapters/cowboy/handler.ex</tt>) accumulates every received chunk into a single growing binary with no size cap. Additionally, when the client omits the <tt>grpc-timeout</tt> header, the per-chunk read timeout resolves to <tt>:infinity</tt>, allowing a slow-trickle client to keep the connection alive indefinitely while memory grows. A single connection is sufficient to exhaust server memory and crash the node.</p><p>This issue affects grpc from 0.3.1 before 1.0.0.</p>"}], "value": "Allocation of Resources Without Limits or Throttling vulnerability in elixir-grpc grpc allows unauthenticated attackers to exhaust the BEAM's memory and crash the server by streaming a large or slow-trickle unary request body.\n\n'Elixir.GRPC.Server.Adapters.Cowboy.Handler':read_full_body/3 (lib/grpc/server/adapters/cowboy/handler.ex) accumulates every received chunk into a single growing binary with no size cap. Additionally, when the client omits the grpc-timeout header, the per-chunk read timeout resolves to :infinity, allowing a slow-trickle client to keep the connection alive indefinitely while memory grows. A single connection is sufficient to exhaust server memory and crash the node.\n\nThis issue affects grpc from 0.3.1 before 1.0.0."}], "impacts": [{"capecId": "CAPEC-130", "descriptions": [{"lang": "en", "value": "CAPEC-130 Excessive Allocation"}]}, {"capecId": "CAPEC-231", "descriptions": [{"lang": "en", "value": "CAPEC-231 Oversized Serialized Data Payloads"}]}], "metrics": [{"cvssV4_0": {"attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 8.7, "baseSeverity": "HIGH", "privilegesRequired": "NONE", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-770", "description": "CWE-770 Allocation of Resources Without Limits or Throttling", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-06-15T21:55:23.629Z"}, "references": [{"tags": ["vendor-advisory", "related"], "url": "https://github.com/elixir-grpc/grpc/security/advisories/GHSA-q8gf-9rvj-gmgj"}, {"tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-48854.html"}, {"tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-48854"}, {"tags": ["patch"], "url": "https://github.com/elixir-grpc/grpc/commit/49e18c3ec6bb9afe2f712caad3dbab5c56a68a00"}], "source": {"discovery": "EXTERNAL"}, "title": "Unbounded request body accumulation causes memory exhaustion in elixir-grpc/grpc", "x_generator": {"engine": "cvelib 1.8.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Allocation of Resources Without Limits or Throttling vulnerability in elixir-grpc grpc allows unauthenticated attackers to exhaust the BEAM's memory and crash the server by streaming a large or slow-trickle unary request body.\n\n'Elixir.GRPC.Server.Adapters.Cowboy.Handler':read_full_body/3 (lib/grpc/server/adapters/cowboy/handler.ex) accumulates every received chunk into a single growing binary with no size cap. Additionally, when the client omits the grpc-timeout header, the per-chunk read timeout resolves to :infinity, allowing a slow-trickle client to keep the connection alive indefinitely while memory grows. A single connection is sufficient to exhaust server memory and crash the node.\n\nThis issue affects grpc from 0.3.1 before 1.0.0."}], "id": "CVE-2026-48854", "lastModified": "2026-06-15T23:16:45.813", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}, "published": "2026-06-15T23:16:45.813", "references": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://cna.erlef.org/cves/CVE-2026-48854.html"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/elixir-grpc/grpc/commit/49e18c3ec6bb9afe2f712caad3dbab5c56a68a00"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/elixir-grpc/grpc/security/advisories/GHSA-q8gf-9rvj-gmgj"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://osv.dev/vulnerability/EEF-CVE-2026-48854"}], "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}

{}

{}