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VU#580079: Arbitrary file read/write vulnerability in ImageMagick-based applications with default configuration

Overview
Multiple arbitrary file read and write vulnerabilities have been identified in applications that use ImageMagick with insufficiently restrictive security policies. Collectively referred to as ImageTragick2, these issues arise when ImageMagick processes attacker-controlled SVG or PostScript content using dangerous coders or delegates permitted by its default or application-supplied configuration. An attacker who can upload an image, or otherwise cause an application to process crafted image content, may be able to read or write files accessible to the ImageMagick process. In some deployments, these capabilities may be chained to achieve arbitrary code execution, compromising the confidentiality, integrity, and availability of the affected application and host.
Description
ImageMagick is a widely used open-source image-processing suite. Web and content-management applications, including Ruby on Rails, WordPress, MediaWiki, ownCloud Classic, and Redmine, may use ImageMagick for operations such as thumbnail generation, cropping, conversion, and transformation. ImageMagick is also commonly included in containerized AI image-processing pipelines. It may operate before inference to normalize or transform inputs, or after inference to convert and prepare generated output. In these environments, images may originate not only from direct uploads but also from URLs, automated agents, datasets, model outputs, or other upstream services.
Two vulnerability variants have been identified:
Coder invocation through SVG (MSL injection)
ImageMagick’s SVG processing can allow a crafted SVG <image> element to invoke a dangerous coder through its xlink:href value, for example, by referencing an MSL: resource. ImageMagick may then interpret the referenced content as a Magick Scripting Language (MSL) script. The script can invoke additional image readers and direct attacker-controlled image data to selected filesystem paths, enabling unauthorized file access. Exploitation depends on the internal SVG coder and the required dangerous coders being available to the ImageMagick process.
Ghostscript invocation through content detection
ImageMagick’s content-based format detection may identify crafted input as PostScript and invoke Ghostscript, a separate interpreter used by ImageMagick to handle PostScript, EPS, and PDF, even when the filename or declared type suggests another format. Although Ghostscript is invoked with -dSAFER, the observed configuration permits file access within /tmp. A crafted PostScript file may therefore read or write data in that directory. This can affect applications that use shared temporary storage for uploaded files, processing artifacts, sessions, or other security-sensitive data.
These issues highlight an important aspect of ImageMagick’s security model: Behavior that can be restricted through a custom security policy is treated as a configuration issue, not a vulnerability in ImageMagick itself. Applications and distributions are therefore responsible for deploying a policy appropriate to their threat model. Many integrations, however, process untrusted content without a sufficiently restrictive policy.
Impact
An attacker who can cause an affected application to process crafted SVG or PostScript content may be able to read or write files in directory locations accessible to the ImageMagick process. In some cases, arbitrary code execution is possible when file access can be combined with writable executable content. AI-enabled services that utilize ImageMagick may face additional exposure because of untrusted image processing. In container deployments, writable host mounts, shared volumes, credentials, or inference artifacts can substantially increase the impact of a successful exploit.
Solution
Consult the Vendor Information section for product-specific updates and mitigations. Users of products that integrate ImageMagick, including Ruby on Rails, WordPress, MediaWiki, ownCloud Classic, and Redmine, should install vendor-provided updates when available. Updating ImageMagick alone may be insufficient if its security policy continues to permit dangerous coders or delegates.
Apply a custom policy.xml based on an allowlist: enable only the formats and operations the application requires, and disable unnecessary coders and delegates, including MSL, MVG, PS, EPS, and PDF. ImageMagick’s bundled secure policy template may not be sufficient for every deployment; verify the effective policy and confirm that prohibited formats are rejected.
Additional recommendations include:
– Isolate image processing: Process untrusted images in a dedicated, minimally privileged environment with restricted filesystem access. Apply the same controls to AI preprocessing and post-processing pipelines.
– Validate and constrain input: Verify file content rather than relying on filenames, extensions, or client-supplied media types.
– Monitor processing activity: Alert on ImageMagick policy violations, unexpected delegate or coder use, unusual processing failures, and unexpected file creation.
Acknowledgements
Thanks to RyotaK of GMO Flatt Security Inc. for reporting these vulnerabilities. The pwn.ai team independently discovered Variant 2 and reported it to WordPress as CVE-2026-65640. This document was written by Vijay Sarvepalli and Molly Jaconski.

VU#685399: PromZard context key code injection leads to remote code execution

Overview
The npm library promzard, versions 4.0.0 and earlier, is vulnerable to remote code execution due to direct string interpolation of context object keys, which allows unsanitized JavaScript code injection.
Description
promzard is a Node.js library designed to automate configuration workflows by evaluating template modules and generating data objects via interactive prompting. The library allows users to provide a context object ctx to expose specific data to the template module.
promzard builds an object by walking the template module for prompt() and asynchronous functions. The keys of ctx, however, are treated as raw JavaScript source code instead of inert data. The implementation performs direct string interpolation of ctx keys, without validation or sanitization, into the parameter list of a function-expression source string that is then evaluated with vm.runInThisContext(). A key containing attacker-controlled JavaScript syntax can be executed during evaluation.
Impact
An attacker capable of influencing the ctx object’s keys (e.g. via parsed configuration file, an HTTP request, or environment variables) can break out of the function parameter list and inject arbitrary JavaScript code. This results in remote code execution within the context of the Node.js process.
Solution
Unfortunately, the maintainers of promzard could not be reached to coordinate the vulnerability. The CERT/CC recommends users ensure that any data used to populate ctx is strictly validated, and that arbitrary keys should not be passed from untrusted sources.
Acknowledgements
Thanks to Abdullah Hamdan for reporting this vulnerability. This document was written by Alex Lewis.

VU#944667: ComfyUI-Easy-Use contains unauthenticated path traversal vulnerability

Overview
ComfyUI-Easy-Use version 1.4.1 and earlier contains a vulnerability in its save_preview() handler that allows an unauthenticated attacker to overwrite an installed custom node’s Python file. An attacker who can reach the affected ComfyUI instance over the network can use the overwrite to execute arbitrary code when ComfyUI restarts.
Description
ComfyUI is a node-based interface for building generative AI workflows. ComfyUI-Easy-Use is an extension that adds custom nodes and workflow utilities.
An attacker can upload a Python file to ComfyUI’s input directory then use save_preview() to copy that file over an installed custom node’s __init__.py. Upon restart, ComfyUI will import and execute the modified node. Remote exploitation requires a deployment that exposes the affected routes to the attacker without authentication.
Impact
An unauthenticated attacker who can reach the affected routes can execute arbitrary Python code and operating system commands with the privileges of the ComfyUI process. The attacker can read or modify models, workflows, and other files accessible to the process and obtain credentials available in its environment. Exploitation requires no user interaction. The reporter confirmed the vulnerability in ComfyUI-Easy-Use version up to verion 1.4.1.
Solution
Unfortunately, the maintainer of ComfyUI-Easy-Use could not be reached to coordinate this vulnerability. To mitigate the vulnerability, remove the extension or restrict network access to ComfyUI to trusted users. The maintainer have released a fix in main as commit 8a0f2fc412.
Acknowledgements
Thanks to Nguyen Huy Hoang for reporting this vulnerability. This document was written by Alex Lewis and Michael Bragg.

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