Description
goproxy through 15.3 fails to apply HTTP proxy basic authentication to CONNECT tunnel requests, allowing unauthenticated clients to bypass credential requirements. Attackers can issue CONNECT requests to establish tunnels through the authenticated proxy without providing credentials, enabling arbitrary TCP traffic relay and access to restricted destinations.
Published: 2026-09-14
Score: 6.9 Medium
EPSS: n/a
KEV: No
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Mon, 14 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Description goproxy through 15.3 fails to apply HTTP proxy basic authentication to CONNECT tunnel requests, allowing unauthenticated clients to bypass credential requirements. Attackers can issue CONNECT requests to establish tunnels through the authenticated proxy without providing credentials, enabling arbitrary TCP traffic relay and access to restricted destinations.
Title goproxy through 15.3 Authentication Bypass via CONNECT
First Time appeared Goproxy Project
Goproxy Project goproxy
Weaknesses CWE-288
CPEs cpe:2.3:a:goproxy_project:goproxy:*:*:*:*:*:*:*:*
Vendors & Products Goproxy Project
Goproxy Project goproxy
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


Subscriptions

Goproxy Project Goproxy
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-14T21:45:43.908Z

Reserved: 2026-09-14T20:35:39.074Z

Link: CVE-2026-91143

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-14T22:16:58.880

Modified: 2026-09-14T22:16:58.880

Link: CVE-2026-91143

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses