CVE-2026-82287: Permissive Cross-domain Security Policy with Untrusted Domains in rybbit-io rybbit
Description
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 v4.0
Score 8.6high
Affected software
rybbit-io
rybbit
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-82287 is a CORS misconfiguration vulnerability in rybbit prior to version 2.7.0. The flaw allows attackers to bypass origin restrictions by reflecting any request origin in the Access-Control-Allow-Origin header while credentials are enabled. This enables attackers to issue credentialed cross-origin requests from arbitrary websites, potentially exposing analytics data, account information, and allowing authenticated state-changing operations as the victim user.
Potential Impact
An attacker can exploit this vulnerability to perform credentialed cross-origin requests from any website, bypassing origin restrictions. This can lead to unauthorized access to sensitive user data such as analytics and account information, and allow attackers to perform authenticated actions on behalf of the victim user, potentially compromising user accounts and data integrity.
Mitigation Recommendations
A fix is available in rybbit version 2.7.0. Users should upgrade to version 2.7.0 or later to remediate this vulnerability. No vendor advisory content is provided, but the affected versions and fix version are clearly stated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-28T11:12:53.034Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a91e417acd9273b4942e938
Added to database: 08/28/2026, 19:40:07 UTC
Last enriched: 09/25/2026, 02:44:24 UTC
Last updated: 10/13/2026, 18:48:24 UTC
Views: 92
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