{"id":"CVE-2025-53629","state":"PUBLISHED","title":"cpp-httplib Unbounded Memory Allocation in Chunked/No-Length Requests Vulnerability","description":"cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.23.0, incoming requests using Transfer-Encoding: chunked in the header can allocate memory arbitrarily in the server, potentially leading to its exhaustion. This vulnerability is fixed in 0.23.0. NOTE: This vulnerability is related to CVE-2025-53628.","publishedAt":"2025-07-10T19:46:01.872Z","updatedAt":"2025-07-10T20:19:21.578Z","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":["yhirose cpp-httplib"],"affected":[{"vendor":"yhirose","product":"cpp-httplib","versions":[{"version":"< 0.23.0","status":"affected"}]}],"references":["https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w","https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-j6p8-779x-p5pw","https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:09:31.862Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/53xxx/CVE-2025-53629.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-53629","state":"PUBLISHED","datePublished":"2025-07-10T19:46:01.872Z","dateUpdated":"2025-07-10T20:19:21.578Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-07-07T14:20:38.389Z"},"containers":{"cna":{"title":"cpp-httplib Unbounded Memory Allocation in Chunked/No-Length Requests Vulnerability","descriptions":[{"lang":"en","value":"cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.23.0, incoming requests using Transfer-Encoding: chunked in the header can allocate memory arbitrarily in the server, potentially leading to its exhaustion. This vulnerability is fixed in 0.23.0. NOTE: This vulnerability is related to CVE-2025-53628."}],"affected":[{"vendor":"yhirose","product":"cpp-httplib","versions":[{"version":"< 0.23.0","status":"affected"}]}],"references":[{"url":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w","name":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-j6p8-779x-p5pw","name":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-j6p8-779x-p5pw","tags":["x_refsource_MISC"]},{"url":"https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99","name":"https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99","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":"2025-07-10T19:46:01.872Z"},"source":{"advisory":"GHSA-qjmq-h3cc-qv6w","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-07-10T20:19:14.489677Z","id":"CVE-2025-53629","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-07-10T20:19:21.578Z"}}]}}}