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CVE-2026-42339— New API: SSRF Filter Bypass via 0.0.0.0

Quick assessment

Affected
QuantumNous new-api
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

New API是QuantumNous开源的一个接口软件。 New API 0.11.9-alpha.1及之前版本存在代码问题漏洞，该漏洞源于SSRF保护未阻止未指定地址0.0.0.0，可能导致持有有效API令牌的用户绕过私有IP过滤器向本地主机发出HTTP请求。

AI Predicted 9.8 Difficulty: Easy EPSS 0.26% · P18

Affected Version Matrix 1

VendorProduct Version RangeStatus
QuantumNous new-api <= 0.11.9-alpha.1 affected
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I. Basic Information for CVE-2026-42339

Vulnerability Information
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Vulnerability Title
New API: SSRF Filter Bypass via 0.0.0.0
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
New API 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
New API是QuantumNous开源的一个接口软件。 New API 0.11.9-alpha.1及之前版本存在代码问题漏洞，该漏洞源于SSRF保护未阻止未指定地址0.0.0.0，可能导致持有有效API令牌的用户绕过私有IP过滤器向本地主机发出HTTP请求。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
QuantumNous new-api <= 0.11.9-alpha.1 -

II. Public POCs for CVE-2026-42339

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III. Intelligence Information for CVE-2026-42339

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Vendor Advisories for CVE-2026-42339 (1)

IV. Related Vulnerabilities

Same product: new-api
Same vendor: QuantumNous
Same weakness: CWE-918

V. Comments for CVE-2026-42339

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