CVE-2026-71479 New API: Integer overflow in quota billing yields negative charges (self-crediting)
Attackers can exploit integer overflows in billing calculations to generate negative charges, resulting in unauthorized account credits and potential financial loss.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-71479?
CVE-2026-71479 is a critical vulnerability in QuantumNous new-api, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-71479?
3 open source packages ship an affected version, including github.com/QuantumNous/new-api.
| Package | Affected | Fixed in |
|---|---|---|
github.com/QuantumNous/new-api Go | All versions | 1.0.0-rc.18 |
github.com/QuantumNous/new-api Go | All versions | 1.0.0-rc.18 |
github.com/QuantumNous/new-api Go | All versions | 1.0.0-rc.18 |
How do I fix CVE-2026-71479?
Upgrade github.com/QuantumNous/new-api to 1.0.0-rc.18 or later.
Is CVE-2026-71479 being exploited?
There is no known exploitation of CVE-2026-71479 in the wild and no public exploit code.
Sources
Also known as GHSA-8r8v-xf7q-rcpr, GO-2026-6242.