CVE-2026-33655 New API: SSRF Protection Bypass via Unresolved Hostname in Notification URLs
Authenticated users can bypass SSRF protections to access internal resources via notification URLs due to missing IP validation on hostnames.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-33655?
CVE-2026-33655 is a high-severity server-side request forgery vulnerability in QuantumNous new-api, published on 9 Jul 2026. Any signed-in user can exploit it over the network, 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 0.12.0-alpha.1, the default SSRF protection configuration did not apply IP filtering to hostnames; with ApplyIPFilterForDomain disabled by default, URL validation checked domain allow/block rules but did not resolve a hostname and validate the resolved IP address, allowing authenticated users to configure Webhook, Bark, or Gotify notification URLs that point at an internal or metadata IP address. This issue is fixed in version 0.12.0-alpha.1.
Weakness: CWE-918
Which versions are affected by CVE-2026-33655?
3 open source packages ship an affected version, including github.com/QuantumNous/new-api. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/QuantumNous/new-api Go | All versions | 0.12.0-alpha.1 |
github.com/QuantumNous/new-api Go | All versions | 0.12.0-alpha.1 |
github.com/QuantumNous/new-api Go | All versions | 0.12.0-alpha.1 |
Products include Newapi New Api.
How do I fix CVE-2026-33655?
Upgrade github.com/QuantumNous/new-api to 0.12.0-alpha.1 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-33655 being exploited?
There is no known exploitation of CVE-2026-33655 in the wild and no public exploit code.
Other vulnerabilities in QuantumNous new-api
- CVE-2025-55573 Cross-site scripting in n/a
- CVE-2026-25802 New API has Potential XSS in its MarkdownRenderer component
- CVE-2026-41432 New API: Stripe Webhook Signature Bypass via Empty Secret Enables Unlimited Quota Fraud
- CVE-2026-42339 New API: SSRF Filter Bypass via 0.0.0.0
- CVE-2026-25591 New API has an SQL LIKE Wildcard Injection DoS via Token Search
Sources
Also known as GHSA-6qcr-qxgr-m7fv, GO-2026-5930.