A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins ("*"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.
History

Mon, 19 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:9::appstream
References

Thu, 15 Oct 2026 23:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:quarkus:3.33::el8
References

Thu, 15 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:quarkus:3 cpe:/a:redhat:quarkus:3.27::el8
References

Mon, 05 Oct 2026 17:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-346

Mon, 21 Sep 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat build Of Apache Camel For Quarkus
Redhat build Of Apicurio Registry
Redhat build Of Debezium 3
Redhat build Of Keycloak
Redhat build Of Quarkus
Redhat dogtag Certificate System
Redhat jboss Enterprise Application Platform Expansion Pack
Redhat quay 3
Redhat satellite 6
Redhat single Sign-on
Vendors & Products Redhat build Of Apache Camel For Quarkus
Redhat build Of Apicurio Registry
Redhat build Of Debezium 3
Redhat build Of Keycloak
Redhat build Of Quarkus
Redhat dogtag Certificate System
Redhat jboss Enterprise Application Platform Expansion Pack
Redhat quay 3
Redhat satellite 6
Redhat single Sign-on

Sat, 19 Sep 2026 23:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-285
CWE-649

Sat, 19 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-942

Sat, 19 Sep 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-285
CWE-649

Fri, 18 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 18 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Fri, 18 Sep 2026 09:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat apicurio Registry
Redhat build Keycloak
Redhat camel Quarkus
Redhat certificate System
Redhat debezium
Redhat enterprise Linux
Redhat jboss Enterprise Application Platform
Redhat jboss Fuse
Redhat jbosseapxp
Redhat quarkus
Redhat red Hat Single Sign On
Redhat satellite
CPEs cpe:/a:redhat:apicurio_registry:3
cpe:/a:redhat:build_keycloak:
cpe:/a:redhat:camel_quarkus:3
cpe:/a:redhat:certificate_system:10
cpe:/a:redhat:certificate_system:11
cpe:/a:redhat:debezium:3
cpe:/a:redhat:jboss_enterprise_application_platform:7
cpe:/a:redhat:jboss_enterprise_application_platform:8
cpe:/a:redhat:jboss_fuse:7
cpe:/a:redhat:jbosseapxp
cpe:/a:redhat:quarkus:3
cpe:/a:redhat:red_hat_single_sign_on:7
cpe:/a:redhat:satellite:6
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat apicurio Registry
Redhat build Keycloak
Redhat camel Quarkus
Redhat certificate System
Redhat debezium
Redhat enterprise Linux
Redhat jboss Enterprise Application Platform
Redhat jboss Fuse
Redhat jbosseapxp
Redhat quarkus
Redhat red Hat Single Sign On
Redhat satellite
References

Fri, 18 Sep 2026 07:30:00 +0000

Type Values Removed Values Added
Description A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins ("*"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.
Title Resteasy-core: resteasy: corsfilter reflects arbitrary origin with credentials under wildcard config
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-09-18T07:20:29.162Z

Updated: 2026-10-19T15:55:49.327Z

Reserved: 2026-09-10T18:20:52.114Z

Link: CVE-2026-89058

cve-icon Vulnrichment

Updated: 2026-09-18T12:04:31.443Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-18T08:17:01.653

Modified: 2026-10-19T16:17:08.657

Link: CVE-2026-89058

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-17T14:00:00Z

Links: CVE-2026-89058 - Bugzilla