CVE-2026-71479
New API: Integer overflow in quota billing yields negative charges (self-crediting)
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
New API is a large language mode (LLM) gateway and artificial intelligence (AI) asset management system. Prior to 1.0.0-rc.18, user-controlled image n, video seconds and duration, max_tokens, max_completion_tokens, maxOutputTokens, audio duration, and billing-expression quantities can overflow conversions in common/quota_math.go and related settlement paths, allowing a low-privileged account with positive balance or an active subscription to turn a negative charge into account credit and potentially drain upstream funds. This issue is fixed in version 1.0.0-rc.18.
| CWE | CWE-190 CWE-682 |
| Vendor | quantumnous |
| Product | new-api |
| Published | Aug 17, 2026 |
| Last Updated | Aug 17, 2026 |
Stay Ahead of the Next One
Get instant alerts for quantumnous new-api
Be the first to know when new critical vulnerabilities affecting quantumnous new-api are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
QuantumNous / new-api
< 1.0.0-rc.18
References
github.com: https://github.com/QuantumNous/new-api/security/advisories/GHSA-8r8v-xf7q-rcpr github.com: https://github.com/QuantumNous/new-api/commit/c9943d37ad93477dd937fc4901cc3c4e0fd8aaab github.com: https://github.com/QuantumNous/new-api/commit/d0bd8aac742d1e160a5ca61743fe35f4fff880e8 github.com: https://github.com/QuantumNous/new-api/releases/tag/v1.0.0-rc.18