CVEvulnerability

CVE-2026-89058

7.4 HIGH Published 2026-09-18 Modified 2026-10-19 Official page ↗
Status
Awaiting Analysis
Published
2026-09-18
Last modified
2026-10-19
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.4 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Weaknesses
CWE-346, CWE-942

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.

Related

Weakness · CWE (2)

  • CWE-346 Origin Validation Error weakness
  • CWE-942 Permissive Cross-domain Security Policy with Untrusted Domains weakness

References