Log in Start free

Vulnerability · Published Sep 18, 2026 · Assigned by redhat

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

High 7.4

In plain English

A high-severity security flaw in Red Hat build of Apache Camel 4 for Quarkus 3 from Red Hat. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.5%top 58.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10idm-pki-acme11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-base11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-ca11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-java11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-kra11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-server11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:10idm-pki-tools11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
AlmaLinux:9pki-resteasy-client3.0.26-20.el9_8.1ALSA-2026:85234
AlmaLinux:9pki-resteasy-core3.0.26-20.el9_8.1ALSA-2026:85234
AlmaLinux:9pki-resteasy-jackson2-provider3.0.26-20.el9_8.1ALSA-2026:85234
AlmaLinux:9pki-resteasy-servlet-initializer3.0.26-20.el9_8.1ALSA-2026:85234
AlmaLinux:10python3-idm-pki11.9.0-6.el10_2.1.alma.1ALSA-2026:92408
Debian:12resteasy3.0no fix listedDEBIAN-CVE-2026-89058
Debian:13resteasy3.0no fix listedDEBIAN-CVE-2026-89058
Debian:14resteasy3.0no fix listedDEBIAN-CVE-2026-89058
Rocky Linux:10dogtag-pki0:11.9.0-6.el10_2.1.rocky.0.1RLSA-2026:92408
Rocky Linux:9resteasy0:3.0.26-20.el9_8.1RLSA-2026:85234
Ubuntu:26.04:LTSresteasyno fix listedUBUNTU-CVE-2026-89058
Ubuntu:26.10resteasyno fix listedUBUNTU-CVE-2026-89058
Ubuntu:22.04:LTSresteasy3.0no fix listedUBUNTU-CVE-2026-89058
Ubuntu:24.04:LTSresteasy3.0no fix listedUBUNTU-CVE-2026-89058
Ubuntu:26.04:LTSresteasy3.0no fix listedUBUNTU-CVE-2026-89058
Ubuntu:26.10resteasy3.0no fix listedUBUNTU-CVE-2026-89058

Affected products (as reported)

VendorProductVersions
Red Hat RESTEasy 0 – before 6.2.19.Final7.0.0.Alpha1 – before 7.0.5.Final
Red Hat Red Hat build of Quarkus 3.27.6.redhat see references
Red Hat Red Hat build of Quarkus 3.33.4.redhat see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 see references
Red Hat Red Hat build of Apache Camel 4 for Quarkus 3 see references
Red Hat Red Hat build of Apicurio Registry 3 see references
Red Hat Red Hat build of Debezium 3 see references
Red Hat Red Hat Build of Keycloak see references
Red Hat Red Hat Build of Keycloak see references
Red Hat Red Hat Certificate System 10 see references
Red Hat Red Hat Certificate System 11 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Fuse 7 see references
Red Hat Red Hat Fuse 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 8 see references
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack see references
Red Hat Red Hat Satellite 6 see references
Red Hat Red Hat Single Sign-On 7 see references

Weakness: CWE-346, CWE-942 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

References