CVE-2026-8890 — code100x Mobile API Authentication Bypass via Header Spoofing
code100x contains an authentication bypass vulnerability in the Mobile API that allows unauthenticated attackers to impersonate arbitrary users by supplying a crafted JSON paylo…
Published: 2026-05-26 · CVSS: 8.8 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7