CVE-2022-4137
Keycloak Cross-site Scripting on OpenID connect login service
8.1
HIGH
CVSS 3.1
EPSS 0.53%
Description
A reflected cross-site scripting (XSS) vulnerability was found in the `oob` OAuth endpoint due to incorrect null-byte handling. This issue allows a malicious link to insert an arbitrary URI into a Keycloak error page.
How to fix CVE-2022-4137
To remediate CVE-2022-4137, upgrade the affected package to a fixed version below.
- —upgrade to 20.0.5 or later
Is CVE-2022-4137 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 20.0.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |