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CVE-2018-8899

Good to know:

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Date: March 22, 2018

IdentityServer IdentityServer4 1.x before 1.5.3 and 2.x before 2.1.3 does not encode the redirect URI on the authorization response page, which might lead to XSS in some configurations.

Language: C#

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2018-8899
https://github.com/IdentityServer/IdentityServer4/commit/21d0da227f50ac102de469a13bc5a15d2cc0f895
https://github.com/IdentityServer/IdentityServer4/releases/tag/2.1.3
https://github.com/IdentityServer/IdentityServer4/issues/2164
https://github.com/IdentityServer/IdentityServer4/releases/tag/1.5.3
https://www.mend.io/vulnerability-database/CVE-2018-8899

Severity Score

Weakness Type (CWE)

Cross-Site Scripting (XSS)

CWE-79

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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