CVE-2026-82287

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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/rybbit-io/rybbit
https://github.com/rybbit-io/rybbit/blob/v2.6.0/server/src/index.ts
https://github.com/rybbit-io/rybbit/commit/6f1039bdd3328a84d6700031bc0ce4714020e2f9
https://github.com/rybbit-io/rybbit/issues/1038
https://www.vulncheck.com/advisories/rybbit-reflects-any-origin-in-cors-responses-while-allowing-credentials

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-28 20:20

Updated : 2026-08-31 19:17

NVD link : CVE-2026-82287

Mitre link : CVE-2026-82287

CVE.ORG link : CVE-2026-82287

JSON object : View

Products Affected

No product.

CWE

CWE-942

Permissive Cross-domain Security Policy with Untrusted Domains

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