CVE-2020-1045
<p>A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.</p> <p>The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.</p> <p>The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.</p>
Published:Jul 1, 2020
Last Modified:Feb 23, 2026
EPS:Sep 11, 2020
EPSS Score:0.20523
CVSS Score:7.5
Affected Products
Vendor
Product
Action
Vendor
Fedoraproject
Product
Fedora
Fedoraproject
Fedora
Vendor
Microsoft
Product
Asp.net Core
Microsoft
Asp.net Core
Vendor
Redhat
Product
Enterprise Linux
Redhat
Enterprise Linux
Vendor
Redhat
Product
Enterprise Linux Aus
Redhat
Enterprise Linux Aus
Vendor
Redhat
Product
Enterprise Linux Eus
Redhat
Enterprise Linux Eus
Vendor
Redhat
Product
Enterprise Linux Tus
Redhat
Enterprise Linux Tus
Vendor
Redhat
Product
Rhel Dotnet
Redhat
Rhel Dotnet
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
No CAPEC recorded yet
Related CVEs
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
