CoreCVE
Back

HIGH

Sub2API: Path traversal in the Responses subpath routes lets an authenticated tenant relay requests to arbitrary upstream endpoints using pooled account credentials

Published Aug 11, 2026

Description

Sub2API is an AI API gateway platform designed to distribute and manage API quotas from AI product subscriptions. From 0.1.135, to 0.1.168, platform API keys issued to tenants are exchanged for upstream requests made with shared provider accounts (ChatGPT/Codex OAuth, OpenAI platform keys, or an operator-configured base URL) that belong to the operator, not to the caller. The `POST /responses/*subpath` wildcard routes spliced the client-supplied subpath into the upstream URL with no validation. This lets an authenticated tenant relay requests to arbitrary upstream endpoints using pooled account credentials via a path traversal. This vulnerability is fixed in 0.1.169.

Affected products

Remediation

No remediation recorded yet.

Weaknesses (2)

CWE-22

Path Traversal

CWE-441

References (4)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner GitHub_M
Published Aug 11, 2026
Updated Aug 11, 2026
Reserved Aug 10, 2026
Link CVE-2026-73079
CISA Vulnrichment
Updated Aug 11, 2026
NVD
Status Deferred
Modified Sep 9, 2026
Link CVE-2026-73079
Red Hat
Severity n/a
Public date n/a
Links CVE-2026-73079
ENISA EUVD
Assigner n/a
Published n/a
Updated n/a
Exploited since n/a
Link n/a