CVE-2026-8890 (GCVE-0-2026-8890)

Vulnerability from cvelistv5 – Published: 2026-05-26 18:23 – Updated: 2026-05-26 19:25
VLAI
Title
code100x Mobile API Authentication Bypass via Header Spoofing
Summary
code100x contains an authentication bypass vulnerability in the Mobile API that allows unauthenticated attackers to impersonate arbitrary users by supplying a crafted JSON payload in the 'g' HTTP header. The middleware in middleware.ts skips identity header generation when an Auth-Key header is present without validating its value, allowing attackers to inject a spoofed user identity header that the downstream route handler in the mobile courses endpoint accepts as trusted, granting unauthorized access to course data belonging to any enrolled user or administrator.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
code100x code100x Affected: 0 , < 90b489ee7c63c301107d6374d4b3f2b8e4060fe5 (custom)
Affected: 0 , < 88c6c5e94e23da101235c4c7e9c7591ac1016549 (custom)
Create a notification for this product.
Date Public
2026-05-26 19:00
Credits
Shravan Manne VulnCheck
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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