CVE-2026-89058
Resteasy-core: resteasy: corsfilter reflects arbitrary origin with credentials under wildcard config
- State
- Published
- Severity
- 7.4 High
- Published
- Sep 18, 2026
- Updated
- Oct 29, 2026
- Reserved
- Sep 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.4 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N | redhat |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
RESTEasyRed Hat |
|
Red Hat build of Quarkus 3.27.6.redhatRed Hat |
|
Red Hat build of Quarkus 3.33.4.redhatRed Hat |
|
Red Hat Enterprise Linux 10Red Hat |
|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat build of Apache Camel 4 for Quarkus 3Red Hat | |
Red Hat build of Apicurio Registry 3Red Hat | |
Red Hat build of Debezium 3Red Hat | |
Red Hat Build of KeycloakRed Hat | |
Red Hat Build of KeycloakRed Hat | |
Red Hat Certificate System 10Red Hat | |
Red Hat Certificate System 11Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat Fuse 7Red Hat | |
Red Hat Fuse 7Red Hat | |
Red Hat JBoss Enterprise Application Platform 7Red Hat | |
Red Hat JBoss Enterprise Application Platform 7Red Hat | |
Red Hat JBoss Enterprise Application Platform 7Red Hat | |
Red Hat JBoss Enterprise Application Platform 7Red Hat | |
Red Hat JBoss Enterprise Application Platform 8Red Hat | |
Red Hat JBoss Enterprise Application Platform Expansion PackRed Hat | |
Red Hat Satellite 6Red Hat | |
Red Hat Single Sign-On 7Red Hat |
References
- RHSA-2026:83082vendor-advisory
- RHSA-2026:83520vendor-advisory
- RHSA-2026:85234vendor-advisory
- RHSA-2026:92408vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-89058vdb-entry
- RHBZ#2519775issue-tracking
- https://github.com/resteasy/resteasy/commit/efeb2b7
- https://github.com/resteasy/resteasy/security/advisories/GHSA-972r-f3fv-whm3
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