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.
Metrics
CVSS 3.1 7.4/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:NWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | — | < 6.2.19.Final; >= 7.0.0.Alpha1, < 7.0.5.Final |
| Red Hat | Red Hat Build of Apache Camel 3.33.4.redhat | — |
| Red Hat | Red Hat build of Quarkus 3.27.6.redhat | — |
| Red Hat | Red Hat build of Quarkus 3.33.4.redhat | — |
| Red Hat | Red Hat Enterprise Linux 10 | — |
| Red Hat | Red Hat Enterprise Linux 10 | — |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | — |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 | — |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 | — |
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 | — |
| Red Hat | Red Hat build of Apicurio Registry 3 | — |
| Red Hat | Red Hat build of Debezium 3 | — |
| Red Hat | Red Hat Build of Keycloak | — |
| Red Hat | Red Hat Build of Keycloak | — |
| Red Hat | Red Hat Certificate System 10 | — |
| Red Hat | Red Hat Certificate System 11 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Fuse 7 | — |
| Red Hat | Red Hat Fuse 7 | — |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | — |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | — |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | — |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | — |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | — |
| Red Hat | Red Hat Satellite 6 | — |
| Red Hat | Red Hat Single Sign-On 7 | — |
References
- https://access.redhat.com/errata/RHSA-2026:83082
- https://access.redhat.com/errata/RHSA-2026:83520
- https://access.redhat.com/errata/RHSA-2026:83670
- https://access.redhat.com/errata/RHSA-2026:85234
- https://access.redhat.com/errata/RHSA-2026:92408
- https://access.redhat.com/errata/RHSA-2026:95221
- https://access.redhat.com/errata/RHSA-2026:95466
- https://access.redhat.com/errata/RHSA-2026:95504
- https://access.redhat.com/errata/RHSA-2026:95505
- https://access.redhat.com/errata/RHSA-2026:95887
- https://access.redhat.com/errata/RHSA-2026:96077
- https://access.redhat.com/errata/RHSA-2026:98494
- https://access.redhat.com/errata/RHSA-2026:98606
- https://access.redhat.com/security/cve/CVE-2026-89058
- https://bugzilla.redhat.com/show_bug.cgi?id=2519775
- https://github.com/resteasy/resteasy/commit/efeb2b7
- https://github.com/resteasy/resteasy/security/advisories/GHSA-972r-f3fv-whm3
- https://github.com/resteasy/resteasy/security/advisories/GHSA-972r-f3fv-whm3
Timeline
- Published
- Sep 18, 2026
- Last modified
- Nov 11, 2026
- NVD status
- Awaiting Analysis