Vulnerability · Published May 8, 2026 · Assigned by GitHub_M
CVE-2026-42339New API: SSRF Filter Bypass via 0.0.0.0
High 7.1
In plain English
A high-severity server-side request forgery in new-api from QuantumNous. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).
Official description
New API is a large language mode (LLM) gateway and artificial intelligence (AI) asset management system. In versions 0.11.9-alpha.1 and prior, the SSRF protection introduced in v0.9.0.5 (CVE-2025-59146) and hardened in v0.9.6 (CVE-2025-62155) does not block the unspecified address 0.0.0.0. A regular (non-admin) user holding any valid API token can send a multimodal request to /v1/chat/completions, /v1/responses, or /v1/messages with 0.0.0.0 as the image/file URL host, bypassing the private-IP filter and causing the server to issue HTTP requests to localhost. This constitutes at minimum a blind SSRF; when the request is routed through an AWS/Bedrock Claude adaptor, the fetched content is inlined into the model response, upgrading it to a full-read SSRF. At time of publication, there are no publicly available patches.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/QuantumNous/new-api | no fix listed | GHSA-v5c3-6wvc-pc2q |
| Go | github.com/QuantumNous/new-api | no fix listed | GO-2026-5652 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| QuantumNous | new-api | <= 0.11.9-alpha.1 |
Weakness: CWE-918 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/QuantumNous/new-api/security/advisories/GHSA-v5c3-6wvc-pc2q x_refsource_CONFIRM