CVE-2018-8899

EUVD-2018-20507
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 52%
Affected Products (NVD)
VendorProductVersion
identityserveridentityserver4
1.0.0 ≤
𝑥
≤ 1.5.2
identityserveridentityserver4
2.0.0 ≤
𝑥
≤ 2.1.2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/IdentityServer/IdentityServer4/commit/21d0da227f50ac102de469a13bc5a15d2cc0f895
https://github.com/IdentityServer/IdentityServer4/issues/2164
https://github.com/IdentityServer/IdentityServer4/releases/tag/1.5.3
https://github.com/IdentityServer/IdentityServer4/releases/tag/2.1.3
https://github.com/IdentityServer/IdentityServer4/commit/21d0da227f50ac102de469a13bc5a15d2cc0f895
https://github.com/IdentityServer/IdentityServer4/issues/2164
https://github.com/IdentityServer/IdentityServer4/releases/tag/1.5.3
https://github.com/IdentityServer/IdentityServer4/releases/tag/2.1.3