{"id":"CVE-2026-110279","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-110279","summary":"IBM ContextForge MCP Gateway 1.0.0 through 1.1.0 is vulnerable to improper credential handling because the X-Upstream-Authorization request header can override the gateway-managed upstream…","details":"IBM ContextForge MCP Gateway 1.0.0 through 1.1.0 is vulnerable to improper credential handling because the X-Upstream-Authorization request header can override the gateway-managed upstream credential for OAuth (authorization_code and client_credentials), bearer and basic authenticated gateways, which could allow an authenticated user to cause upstream requests to be made with a different credential and bypass per-user permission and audit attribution.","published":"2026-11-13T21:43:43.544Z","modified":"2026-11-13T21:43:43.544Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"FIX","url":"https://www.ibm.com/support/pages/node/7296490"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-11-13T21:43:43.544Z"}}