Vulnerabilities in urllib3
13 resultsCVE-2026-21441HIGHurllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects (streaming API)EPSS 2.9%CVE-2023-43804MEDIUM`Cookie` HTTP header isn't stripped on cross-origin redirectsEPSS 1.4%CVE-2024-37891MEDIUMProxy-Authorization request header isn't stripped during cross-origin redirects in urllib3EPSS 1.1%CVE-2025-66418HIGHurllib3 allows an unbounded number of links in the decompression chainEPSS 0.7%CVE-2025-66471HIGHurllib3 Streaming API improperly handles highly compressed dataEPSS 0.7%CVE-2026-44432HIGHurllib3: Decompression-bomb safeguards bypassed in parts of the streaming APIEPSS 0.7%CVE-2025-50182MEDIUMurllib3 does not control redirects in browsers and Node.jsEPSS 0.6%CVE-2023-45803MEDIUMRequest body not stripped after redirect in urllib3EPSS 0.6%CVE-2025-50181MEDIUMurllib3 redirects are not disabled when retries are disabled on PoolManager instantiationEPSS 0.5%CVE-2026-97689HIGHurllib3: HTTPResponse.stream()/read_chunked() buffers an unbounded chunk-size line into memoryEPSS 0.3%CVE-2026-44431HIGHurllib3: Sensitive headers forwarded across origins in proxied low-level redirectsEPSS 0.3%CVE-2026-97688MEDIUMurllib3: Chunked Deflate streaming can enter an infinite loopEPSS 0.3%CVE-2026-97687HIGHurllib3: HTTPS proxy TLS configuration may be ignored or overriddenEPSS 0.2%