CVE-2026-117510 in Dexbotic
Summary
by MITRE • 10/27/2026
A flaw has been found in Dexmal Dexbotic up to 0.2.0. Affected by this vulnerability is the function load_pretrained_gr00t of the file dexbotic/model/gr00tsonic/gr00tsonic_arch.py of the component gr00tsonic Checkpoint Loader. This manipulation of the argument weight_map causes path traversal. Remote exploitation of the attack is possible. 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.
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Analysis
by VulDB Data Team • 10/27/2026
The vulnerability identified in Dexmal Dexbotic versions up to 0.2.0 represents a critical security flaw within the gr00tsonic Checkpoint Loader component, specifically residing in the load_pretrained_gr00t function located in the dexbotic/model/gr00tsonic/gr00tsonic_arch.py file. This issue is classified as a path traversal vulnerability, which allows an attacker to manipulate input arguments to access files and directories that are stored outside the expected root directory. The core technical flaw lies in how the weight_map argument is processed during the loading of pretrained model weights. When this function receives user-controlled or untrusted input for the weight_map parameter without adequate sanitization or validation, it fails to properly restrict file system access paths. This lack of rigorous input validation enables an adversary to construct maliciously crafted filenames containing directory traversal sequences such as dot-dot-slash characters. By exploiting these sequences, the application resolves references to sensitive files located in arbitrary locations on the host operating system rather than restricting access solely to the designated model weight directories.
The operational impact of this vulnerability is significant due to its potential for remote exploitation. Since Dexbotic often operates in environments where models are loaded from external sources or user-provided configurations, an attacker can potentially trigger this flaw remotely by supplying a specially crafted request that includes malicious path traversal payloads within the weight_map argument. Successful exploitation could lead to unauthorized reading of sensitive system files, such as configuration files containing credentials, private keys, or other confidential data stored on the server hosting the Dexbotic instance. In more severe scenarios, if combined with other vulnerabilities like arbitrary file write capabilities, this flaw could facilitate further compromise of the underlying infrastructure. The fact that an exploit has already been published and is available for use increases the urgency of addressing this issue, as automated attacks leveraging known exploits are likely to target systems running affected versions without immediate patches applied.
From a classification perspective, this vulnerability aligns with CWE-22: Improper Limitation of a Pathname to a Restricted Directory, which describes flaws where software does not properly neutralize special elements within file paths that can cause the path to resolve outside of the intended directory. Additionally, in terms of tactical behavior, this exploitation technique corresponds to ATT&CK Technique T1083: File and Directory Discovery, as it involves enumerating and accessing files on a compromised system through improper access controls. The persistence of this vulnerability is exacerbated by the project's lack of response to early issue reports, leaving users exposed until an official patch or mitigation strategy is provided.
To mitigate the risks associated with this path traversal flaw, immediate actions should focus on restricting file system access and validating inputs rigorously. Developers must implement strict allow-listing for file paths within the load_pretrained_gr00t function to ensure that only files from predefined, safe directories can be loaded. Input validation mechanisms should be strengthened to detect and reject any attempts to inject directory traversal characters into the weight_map argument before it is processed by the underlying file system operations. Furthermore, running the Dexbotic service with minimal privileges ensures that even if an attacker succeeds in reading restricted files, they cannot modify critical system configurations or execute arbitrary code through those files. Until a formal patch is released from the project maintainers, users should consider isolating their Dexbotic instances within containerized environments with strict file system permissions to limit the blast radius of any potential exploitation attempts involving this vulnerability.