CVE-2026-89058

Source
https://cve.org/CVERecord?id=CVE-2026-89058
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89058.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-89058
Aliases
  • GHSA-972r-f3fv-whm3
Downstream
Published
2026-09-18T07:20:29Z
Modified
2026-09-20T11:47:28Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N CVSS Calculator
Summary
Resteasy-core: resteasy: corsfilter reflects arbitrary origin with credentials under wildcard config
Details

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.

Database specific
{
    "cna_assigner":  "redhat",
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89058.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "fixed":  "6.2.19.Final"
                },
                {
                    "introduced":  "7.0.0.Alpha1"
                },
                {
                    "fixed":  "7.0.5.Final"
                }
            ],
            "source":  "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/resteasy/resteasy

Affected ranges

Type
GIT
Repo
https://github.com/resteasy/resteasy
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
Database specific
Show details
{
    "source":  "REFERENCES"
}

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89058.json"