{"schema_version":"1","data":[{"id":3820,"advisory_id":"e65c723d-46c8-4985-8b2b-f20a31676fb1","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97689","source_published_at":"2026-09-29T15:36:05.963+00:00","published_at":"2026-10-24T21:41:04.858584+00:00","extraction_method":"structured","technologies":["core-cve","urllib3"],"cve_ids":["CVE-2026-97689"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"urllib3: HTTPResponse.stream()/read_chunked() buffers an unbounded chunk-size line into memory","summary":"urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.read_chunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a malicious server returns Transfer-Encoding: chunked followed by a very long run of bytes without a newline. The attack mechanism is that a malicious HTTP server sends a very long unterminated chunk-size line. The impact is that unbounded memory allocation can exhaust the client process. This issue is fixed in version 2.8.0.","evidence":"cve:CVE-2026-97689","products":[{"name":{"value":"urllib3","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"high","structured":{"id":"CVE-2026-97689","aliases":["CVE-2026-97689"],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":8.9,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","userInteraction":"NONE","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","subIntegrityImpact":"NONE","vulnIntegrityImpact":"NONE","subAvailabilityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnConfidentialityImpact":"NONE"}}],"affected":[{"vendor":"urllib3","product":"urllib3","versions":[{"status":"affected","version":">= 1.10.3, < 2.8.0"}]}],"modified":"2026-09-29T16:23:23.167Z","provider":"cve","references":["https://github.com/urllib3/urllib3/security/advisories/GHSA-vxq7-64xx-v4gw","https://github.com/urllib3/urllib3/commit/cd770b059b543be29298ea5c52afb0b1b090f5ed","https://github.com/urllib3/urllib3/releases/tag/2.8.0"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-97689","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-29T16:21:49.840583Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-29T16:23:23.167Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-29T15:36:39.904Z"}}},"related_cves":[{"value":"CVE-2026-97689","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"},"priority":{"reasons":["publisher_severity"],"severity":"high","linked_cves":[],"fix_available":false,"known_exploited":false,"publisher_severity":"high"},"context_update":false}],"next_after":3820,"next_before":3820}