{"id":"CVE-2026-57487","state":"PUBLISHED","title":"libupnp chunked HTTP bodies can bypass g_maxContentLength and be fully buffered","description":"pupnp is an SDK for development of UPnP device and control point applications. Prior to 2.0.2, Transfer-Encoding: chunked causes the HTTP parser in upnp/src/genlib/net/http/httpparser.c to leave parser->content_length at zero while parser_parse_chunky_entity and parser_parse_chunky_body accumulate decoded bytes in parser->msg.entity. The g_maxContentLength checks in http_RecvMessage in upnp/src/genlib/net/http/httpreadwrite.c therefore reject oversized numeric Content-Length bodies but do not enforce the same limit on decoded chunked bodies. A remote peer that can reach a SOAP, GENA, miniserver, or control-point HTTP response path can make the process buffer an entity larger than the configured maximum, causing resource exhaustion and denial of service. This issue is fixed in 2.0.2.","publishedAt":"2026-10-16T15:33:56.394Z","updatedAt":"2026-10-21T02:21:37.115Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["pupnp pupnp"],"affected":[{"vendor":"pupnp","product":"pupnp","versions":[{"version":"< 2.0.2","status":"affected"}]}],"references":["https://github.com/pupnp/pupnp/security/advisories/GHSA-gcj7-j9f7-q84c","https://github.com/pupnp/pupnp/commit/9ff9bc583ad8ee4ba022634434a7b71db9bd96e1","https://github.com/pupnp/pupnp/releases/tag/release-2.0.2"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/57xxx/CVE-2026-57487.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-57487","state":"PUBLISHED","datePublished":"2026-10-16T15:33:56.394Z","dateUpdated":"2026-10-21T02:21:37.115Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-24T14:53:40.111Z"},"containers":{"cna":{"title":"libupnp chunked HTTP bodies can bypass g_maxContentLength and be fully buffered","descriptions":[{"lang":"en","value":"pupnp is an SDK for development of UPnP device and control point applications. Prior to 2.0.2, Transfer-Encoding: chunked causes the HTTP parser in upnp/src/genlib/net/http/httpparser.c to leave parser->content_length at zero while parser_parse_chunky_entity and parser_parse_chunky_body accumulate decoded bytes in parser->msg.entity. The g_maxContentLength checks in http_RecvMessage in upnp/src/genlib/net/http/httpreadwrite.c therefore reject oversized numeric Content-Length bodies but do not enforce the same limit on decoded chunked bodies. A remote peer that can reach a SOAP, GENA, miniserver, or control-point HTTP response path can make the process buffer an entity larger than the configured maximum, causing resource exhaustion and denial of service. This issue is fixed in 2.0.2."}],"affected":[{"vendor":"pupnp","product":"pupnp","versions":[{"version":"< 2.0.2","status":"affected"}]}],"references":[{"url":"https://github.com/pupnp/pupnp/security/advisories/GHSA-gcj7-j9f7-q84c","name":"https://github.com/pupnp/pupnp/security/advisories/GHSA-gcj7-j9f7-q84c","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/pupnp/pupnp/commit/9ff9bc583ad8ee4ba022634434a7b71db9bd96e1","name":"https://github.com/pupnp/pupnp/commit/9ff9bc583ad8ee4ba022634434a7b71db9bd96e1","tags":["x_refsource_MISC"]},{"url":"https://github.com/pupnp/pupnp/releases/tag/release-2.0.2","name":"https://github.com/pupnp/pupnp/releases/tag/release-2.0.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-16T15:33:56.394Z"},"source":{"advisory":"GHSA-gcj7-j9f7-q84c","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-21T02:21:26.610826Z","id":"CVE-2026-57487","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-21T02:21:37.115Z"}}]}}}