Search/CVE-2020-8492
● CVE — Medium

CVE-2020-8492

Vendordebian, fedoraproject, canonical, python, opensuseProductdebian linux, fedora, ubuntu linux, python, leapDiscoveredJan 30, 2020UpdatedOct 7, 2026

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.

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CVSS v3.1
6.5 MEDIUM
EPSS
6.62%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionREQUIRED
ScopeUNCHANGED
ConfidentialityNONE
IntegrityNONE
AvailabilityHIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Connections
6 relationships
Timeline
disclosure → media coverage
Jan 30, 2020
Disclosure — published as a CVE record. · last revised by NVD Oct 7, 2026