CVE-2026-44431

Summary

urllib3 is an HTTP client library for Python. From 1.23 to before 2.7.0, cross-origin redirects followed from the low-level API via ProxyManager.connection_from_url().urlopen(…, assert_same_host=False) still forward these sensitive headers. This vulnerability is fixed in 2.7.0.

Affected Software

VendorProductVersion RangeStatus
urllib3urllib3>= 1.23, < 2.7.0affected

Weaknesses

  • CWE-200: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References