Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.
History

Wed, 14 Oct 2026 09:30:00 +0000

Type Values Removed Values Added
References

Wed, 07 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 14 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.04231}

epss

{'score': 0.03912}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-01-30T00:00:00.000Z

Updated: 2026-10-14T08:40:24.670Z

Reserved: 2020-01-30T00:00:00.000Z

Link: CVE-2020-8492

cve-icon Vulnrichment

Updated: 2024-08-04T10:03:45.890Z

cve-icon NVD

Status : Modified

Published: 2020-01-30T19:15:12.103

Modified: 2026-10-14T09:17:21.473

Link: CVE-2020-8492

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-03-02T00:00:00Z

Links: CVE-2020-8492 - Bugzilla