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CVE-2026-82287

Rybbit Reflects Any Origin in CORS Responses While Allowing Credentials

CVSS 4.0 8.6 HIGHCVSS 3.1 8.1 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-82287

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-82287

Published

rybbit

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "rybbit-io",
                    "product": "rybbit",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "2.7.0",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON