CVE-2024-4540
Keycloak exposes sensitive information in Pushed Authorization Requests (PAR)
7.5
HIGH
CVSS 3.1
EPSS 0.31%
Description
A flaw was found in Keycloak in the OAuth 2.0 Pushed Authorization Requests (PAR). Client provided parameters were found to be included in plain text in the KC_RESTART cookie returned by the authorization server's HTTP response to a request_uri authorization request. This could lead to an information disclosure vulnerability.
How to fix CVE-2024-4540
To remediate CVE-2024-4540, upgrade the affected package to a fixed version below.
- —upgrade to 24.0.5 or later
Is CVE-2024-4540 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 24.0.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |