CVE-2026-9086
Mở trang đầy đủCVSS 7.3 HIGH RCE
Keycloak vulnerable to cross-site scripting (xss) via case-insensitive uri validation bypass
Mô tả
Description
A flaw was found in Keycloak. A remote attacker with administrative privileges, specifically those with manage-client permission or access to client registration endpoints, could bypass client Uniform Resource Identifier (URI) validation. This is achieved by registering a malicious client with a specially crafted redirect URI using a case-insensitive javascript: or data: scheme. This Cross-Site Scripting (XSS) vulnerability allows for arbitrary code execution in the Keycloak origin when a victim clicks the crafted link, such as in the logout flow or the Admin Console.
Điểm và phân loại
- CVSS
- 7.3 HIGH v3.1
- Nguồn điểm
- GitHub Advisory
- Mức độ (theo nguồn)
- HIGH
- EPSS
- 0.78%
- CWE
- CWE-79
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Ảnh hưởng
| Package | Bản bị ảnh hưởng | Bản đã sửa |
|---|---|---|
maven org.keycloak:keycloak-services |
< 26.6.4 |
26.6.4
|
Vì sao bị lọc
- CVSS 7.3 < 8.0 và không thuộc CISA KEV
Loại tác động
- RCE
- từ khoá "arbitrary code execution"
Dữ liệu riêng của nguồn
- OSV.dev · ID
- GHSA-v3f7-2p4r-mwfw
Tham khảo
- https://github.com/advisories/GHSA-v3f7-2p4r-mwfw
- https://github.com/keycloak/keycloak/security/advisories/GHSA-v3f7-2p4r-mwfw
- https://nvd.nist.gov/vuln/detail/CVE-2026-9086
- https://access.redhat.com/errata/RHSA-2026:30049
- https://access.redhat.com/errata/RHSA-2026:30050
- https://access.redhat.com/errata/RHSA-2026:30083
- https://access.redhat.com/errata/RHSA-2026:30084
- https://access.redhat.com/security/cve/CVE-2026-9086
- https://bugzilla.redhat.com/show_bug.cgi?id=2480170
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9086.json
- https://osv.dev/vulnerability/GHSA-v3f7-2p4r-mwfw
- https://github.com/keycloak/keycloak