{"id":"CVE-2024-4540","title":"A flaw was found in Keycloak in OAuth 2.0 Pushed Authorization Requests (PAR)","summary":"A flaw was found in Keycloak in 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…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-312"],"published":"2024-06-03","updated":"2026-10-09","sourceUpdated":"2026-10-09T17:16:39.943","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-4540","references":[{"url":"https://access.redhat.com/errata/RHSA-2024:3566","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:3567","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:3568","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:3570","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:3572","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:3573","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:3574","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:3575","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:3576","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2024-4540","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2279303","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:3566","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:3567","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:3568","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:3570","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:3572","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:3573","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:3574","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:3575","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:3576","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/security/cve/CVE-2024-4540","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2279303","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00551,"epssPercentile":0.44389,"ingestedAt":"2026-10-09T18:07:39.401Z","slug":"CVE-2024-4540","body":"## Overview\n\nA flaw was found in Keycloak in 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, possibly leading to an information disclosure vulnerability.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}