CVE-2026-90603 Anil-matcha Open-Generative-AI S3 Upload upload-binary unrestricted upload

Medium 6.9 Published Updated

Remote attackers can upload arbitrary files via the S3 upload endpoint, potentially leading to code execution or data modification.

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-2026-90603?

CVE-2026-90603 is a medium-severity vulnerability in Anil-matcha Open-Generative-AI, published on 13 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability was identified in Anil-matcha Open-Generative-AI up to 1.0.11/2.0.0. Affected by this issue is some unknown functionality of the file /api/upload-binary of the component S3 Upload. Such manipulation of the argument x-proxy-target-url leads to unrestricted upload. The attack may be launched remotely. The name of the patch is f013270957f75e439eaf97eb2a93decb32a4543e. Applying a patch is advised to resolve this issue.

Weakness: CWE-434, CWE-284

Which versions are affected by CVE-2026-90603?

How do I fix CVE-2026-90603?

No fix has been published for CVE-2026-90603 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-90603 being exploited?

There is no known exploitation of CVE-2026-90603 in the wild and no public exploit code.

Sources

Also known as GHSA-xxxm-jwv4-xmv7.

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