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Case File

CVE-2018-20060

CRITICAL · CVSS 9.8 EPSS 4.49% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2018-12-11 · Last synced 2026-08-04

Field Assessment

AI analysis pending.

Exhibit — Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2018-20060
Severity
CRITICAL
CVSS
9.8
EPSS
4.49%

Original Filing — NVD Description

urllib3 before version 1.23 does not remove the Authorization HTTP header when following a cross-origin redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the Authorization header to be exposed to unintended hosts or transmitted in cleartext.