CVE-2024-1561: Arbitrary Local File Read via Component Method Invocation in gradio-app/gradio

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 9.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-04-16 · updated 2026-06-17
Weakness: CWE-29

Description

An issue was discovered in gradio-app/gradio, where the `/component_server` endpoint improperly allows the invocation of any method on a `Component` class with attacker-controlled arguments. Specifically, by exploiting the `move_resource_to_block_cache()` method of the `Block` class, an attacker can copy any file on the filesystem to a temporary directory and subsequently retrieve it. This vulnerability enables unauthorized local file read access, posing a significant risk especially when the application is exposed to the internet via `launch(share=True)`, thereby allowing remote attackers to read files on the host machine. Furthermore, gradio apps hosted on `huggingface.co` are also affected, potentially leading to the exposure of sensitive information such as API keys and credentials stored in environment variables.

Affected products

gradio-app gradio: from 4.12.0 before 4.13.0 — fixed in 4.13.0

How to fix

Upgrade to a fixed version: gradio-app gradio 4.13.0. Check the vendor advisory for mitigations.

References

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