CVE-2026-7223: BigSweetPotatoStudio HyperChat SSRF Vulnerability
The National Vulnerability Database reports a high-severity Server-Side Request Forgery (SSRF) vulnerability, CVE-2026-7223, in BigSweetPotatoStudio HyperChat versions up to 2.0.0-alpha.63. This flaw resides within the fetch function of the AI Proxy Middleware component, specifically in the packages/core/src/http/aiProxyMiddleware.mts file. Attackers can manipulate the baseurl argument to trigger the SSRF.
This vulnerability carries a CVSSv3.1 score of 7.3 (High) and is remotely exploitable without authentication, meaning anyone can launch the attack from anywhere. The National Vulnerability Database notes that a public exploit is available, significantly raising the risk profile for affected organizations. The vendor, BigSweetPotatoStudio, was reportedly informed of the issue but has not yet responded.
SSRF vulnerabilities are critical because they allow attackers to coerce the server into making requests to internal or external resources on their behalf. This can lead to information disclosure, access to internal services, or even remote code execution in some scenarios. The existence of a public exploit means it’s no longer a theoretical risk but an active threat that will be leveraged by opportunistic attackers.
What This Means For You
- If your organization uses BigSweetPotatoStudio HyperChat, you need to determine if you are running an affected version (up to 2.0.0-alpha.63). Given the public exploit and remote attack vector, this is an immediate exposure. Isolate or disable the affected component if you cannot patch, and monitor network traffic for suspicious outbound connections originating from your HyperChat instances.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-7223: BigSweetPotatoStudio HyperChat SSRF via AI Proxy Middleware
title: CVE-2026-7223: BigSweetPotatoStudio HyperChat SSRF via AI Proxy Middleware
id: scw-2026-04-28-ai-1
status: experimental
level: high
description: |
Detects attempts to exploit CVE-2026-7223 by targeting the AI Proxy Middleware in BigSweetPotatoStudio HyperChat. The rule looks for requests to the specific middleware path that include the 'baseurl=' parameter, indicative of an SSRF attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-04-28
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-7223/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
uri|contains:
- '/packages/core/src/http/aiProxyMiddleware.mts'
cs-uri-query|contains:
- 'baseurl='
cs-method:
- 'GET'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-7223 | SSRF | BigSweetPotatoStudio HyperChat up to 2.0.0-alpha.63 |
| CVE-2026-7223 | SSRF | AI Proxy Middleware component |
| CVE-2026-7223 | SSRF | function fetch in packages/core/src/http/aiProxyMiddleware.mts |
| CVE-2026-7223 | SSRF | manipulation of argument baseurl |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 28, 2026 at 07:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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