Detections
Analytics
CVE-2025-15282
medium
Description
User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype.
References
https://mail.python.org/archives/list/[email protected]/thread/X66HL7SISGJT33J53OHXMZT4DFLMHVKF/
https://github.com/python/cpython/pull/143926
https://github.com/python/cpython/issues/143925
https://github.com/python/cpython/commit/f25509e78e8be6ea73c811ac2b8c928c28841b9f
Details
Published: 2026-01-20
Updated: 2026-01-20
Risk Information
CVSS v2
Base Score: 6.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
Severity: Medium
CVSS v3
Base Score: 9.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity: Critical
CVSS v4
Base Score: 6
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N
Severity: Medium