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7.4 High

CVE-2026-89058 Resteasy-core: resteasy: corsfilter reflects arbitrary origin with credentials under wildcard config

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.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Exploitable remotely over the network, without an account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Network
Attack complexity
Low
Privileges required
None
Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

Affected products and versions

Product Affected versions Fixed in
Red Hat 7.0 7.0.0.Alpha1 → < 7.0.5.Final 7.0.5.Final
Red Hat 6.2 earliest → < 6.2.19.Final 6.2.19.Final
Red Hat build of Apache Camel 4 for Quarkus 3 Versions not published
Red Hat build of Apicurio Registry 3 Versions not published
Red Hat build of Debezium 3 Versions not published
Red Hat Build of Keycloak Versions not published
Red Hat build of Quarkus Versions not published
Red Hat Certificate System 10 Versions not published
Red Hat Certificate System 11 Versions not published
Show the 16 other branches
Product Affected versions Fixed in
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 8 Versions not published
Red Hat Enterprise Linux 9 Versions not published
Red Hat Fuse 7 Versions not published
Red Hat JBoss Enterprise Application Platform 7 Versions not published
Red Hat JBoss Enterprise Application Platform 8 Versions not published
Red Hat JBoss Enterprise Application Platform Expansion Pack Versions not published
Red Hat Satellite 6 Versions not published
Red Hat Single Sign-On 7 Versions not published
Red Hat build of Quarkus 3.27.6.redhat 6.2 earliest → < 6.2.19.Final-redhat-00003 6.2.19.Final-redhat-00003
Red Hat build of Quarkus 3.33.4.redhat 6.2 earliest → < 6.2.19.Final-redhat-00003 6.2.19.Final-redhat-00003
Red Hat JBoss Enterprise Application Platform 8.1 Versions not published
Red Hat Build of Apache Camel 3.33.4.redhat 6.2 earliest → < 6.2.19.Final-redhat-00003 6.2.19.Final-redhat-00003
Red Hat Enterprise Linux 10.0 Extended Update Support Versions not published
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9.6 Extended Update Support Versions not published

References

Timeline

  1. Published
  2. Last modified

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