CVE-2026-94040 vas3k TaxHacker actions.ts testLLMProviderAction server-side request forgery
Remote attackers can exploit SSRF in TaxHacker's LLM provider test action to access internal resources or bypass security controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-94040?
CVE-2026-94040 is a medium-severity server-side request forgery vulnerability in vas3k TaxHacker, published on 20 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw has been found in vas3k TaxHacker up to 0.8.5. Affected by this vulnerability is the function testLLMProviderAction of the file app/(app)/apps/settings/actions.ts. Executing a manipulation of the argument provider/apiKey/model/baseUrl can lead to server-side request forgery. The attack may be performed from remote. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-918
Which versions are affected by CVE-2026-94040?
How do I fix CVE-2026-94040?
No fix has been published for CVE-2026-94040 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-94040 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-94040 exists.
Sources
Also known as GHSA-q426-w6qm-jw5g.