Status: UPDATED
| Advisory ID: CVE-2026-89058
Key Details
| CVE | CVE-2026-89058 |
| CVSS Score / Version | 7.4 (High) / CVSS v3.1 |
| Updated | 2026-10-05 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is none; user interaction is required; scope is changed; confidentiality impact is high; integrity impact is none; availability impact is none. |
| Affected products | see table below |
| Classified as | CWE-346 (Origin Validation Error) |
| Exploitation prediction (EPSS) | 0.47% probability of exploitation in the next 30 days (39% percentile) -- FIRST.org's EPSS model. |
Affected Products, Subsystems & Sectors
| Subsystems | OT Supporting Infrastructure |
| Sectors | Multiple |
What to Know
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. (NVD)
What to Do
Monitor Red Hat's web page for any future patch releases.
References