CVE-2025-66418
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-66418
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66418.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-66418
- Aliases
- Downstream
- Related
- Published
- 2025-12-05T16:02:15.271Z
- Modified
- 2025-12-07T10:07:23.635545Z
- Severity
-
- 8.9 (High) CVSS_V4 - 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 CVSS Calculator
- Summary
- urllib3 allows an unbounded number of links in the decompression chain
- Details
-
urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.24 and prior to 2.6.0, the number of links in the decompression chain was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps leading to high CPU usage and massive memory allocation for the decompressed data. This vulnerability is fixed in 2.6.0.
- Database specific
{ "cwe_ids": [ "CWE-770" ], "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66418.json" }- References