CVE-2026-91143

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Source
https://cve.org/CVERecord?id=CVE-2026-91143
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91143.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-91143
Published
2026-09-14T21:45:43Z
Modified
2026-09-17T03:31:06Z
Severity
  • 6.9 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
goproxy through 15.3 Authentication Bypass via CONNECT
Details

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.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-288"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91143.json"
}
References

Affected packages

Git / github.com/snail007/goproxy

Affected ranges

Type
GIT
Repo
https://github.com/snail007/goproxy
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e6d6a821db80e7f47ee6e981a144984e1d4ddb3d
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "15.3"
        },
        {
            "fixed": "15.3"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

v15.*
v15.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91143.json"