CVE-2026-82287 HIGH

CVE-2026-82287: Rybbit Reflects Any Origin in CORS Responses While Allowing Credentials

Vendor Rybbit-Io
Product rybbit
Weakness CWE-942
Published August 28, 2026
Last update August 28, 2026

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Rybbit before 2.7.0 contains a CORS misconfiguration vulnerability that allows attackers to bypass origin restrictions by reflecting any request origin in Access-Control-Allow-Origin responses while credentials are enabled. Attackers can issue credentialed cross-origin requests from any website to read analytics data, account information, and perform authenticated state-changing operations as the victim user.

Key dates

02Disclosure timeline

August 28, 2026 CVE published