{"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":"2026-09-24T21:09:30.485Z"},"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":"0.3.0-alpha.2","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":"0.3.0-alpha.2","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"AND"}],"credits":[{"lang":"en","type":"finder","value":"Peter Ullrich"},{"lang":"en","type":"remediation developer","value":"Paulo Valente"},{"lang":"en","type":"analyst","value":"Jonatan Männchen / EEF"}],"datePublic":"2026-06-15T21:55:23.000Z","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>\n<p><code>'Elixir.GRPC.Server.Adapters.Cowboy.Handler':read_full_body/3</code> (<code>lib/grpc/server/adapters/cowboy/handler.ex</code>) accumulates every received chunk into a single growing binary with no size cap. Additionally, when the client omits the <code>grpc-timeout</code> header, the per-chunk read timeout resolves to <code>:infinity</code>, 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>\n<p>This issue affects grpc: from 0.3.0-alpha.2 before 1.0.0.</p>"},{"base64":false,"type":"text/markdown","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 0.3.0-alpha.2 before 1.0.0."}],"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 0.3.0-alpha.2 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":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"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":"2026-09-24T21:09:30.485Z"},"references":[{"tags":["vendor-advisory","related"],"url":"https://github.com/elixir-grpc/grpc/security/advisories/GHSA-q8gf-9rvj-gmgj"},{"name":"EEF CNA record for CVE-2026-48854","tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-48854.html"},{"name":"OSV record EEF-CVE-2026-48854","tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-48854"},{"name":"Introducing commit d1abe70 in elixir-grpc/grpc","tags":["related"],"url":"https://github.com/elixir-grpc/grpc/commit/d1abe70a6cad6dac4a3f8235d883d7c896989560"},{"name":"Fix commit 49e18c3 in elixir-grpc/grpc","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"},"adp":[{"references":[{"url":"https://github.com/elixir-grpc/grpc/security/advisories/GHSA-q8gf-9rvj-gmgj","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-16T14:47:02.881535Z","id":"CVE-2026-48854","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-16T14:47:28.479Z"}}]}}