XSS in Identityserver Identityserver4
CVE-2018-8899
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.012 (67.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/IdentityServer/IdentityServer4/commit/21d0da227f50ac102de469a13bc5a1… (Patch, Third Party Advisory)
- github.com/IdentityServer/IdentityServer4/releases/tag/2.1.3 (Third Party Advisory)
- github.com/IdentityServer/IdentityServer4/issues/2164 (Third Party Advisory, Issue Tracking)
- github.com/IdentityServer/IdentityServer4/releases/tag/1.5.3 (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-8899?
- CVE-2018-8899 is a medium-severity vulnerability in Identityserver Identityserver4, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-03-22.
- How severe is CVE-2018-8899?
- Medium severity. CVSS v3 base score is 6.1 out of 10.