CVE-2026-52001

high

Description

An issue in geelen mcp-remote 0.1.18 through 0.1.38 allows a remote attacker to obtain sensitive information via the SSE transport eventSourceInit fetch wrapper " src/lib/utils.ts

References

https://github.com/playb0t/mcp-remote-oauth-security/blob/v1.0.1/advisories/F-11-sse-token-origin-scope.md

https://github.com/playb0t/mcp-remote-oauth-security#readme

https://github.com/geelen/mcp-remote/security/advisories

https://github.com/geelen/mcp-remote

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-86021

Details

Source: Mitre, NVD

Published: 2026-09-24

Updated: 2026-10-06

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N