CVE-2026-104103
8.1HighPublished 14 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Impact
- High impact on integrity, availability
- Weakness
- CWE-22, CWE-59
Impact
Attackers can overwrite arbitrary files with the privileges of the running process. Exploitation requires convincing a user or workflow to download and process a malicious dataset archive on Python 3.12 or 3.13.
Root cause
The archive extraction logic failed to validate symlink and hard-link targets and used os.path.commonprefix for path containment checks, allowing directory traversal via malicious links.
Affected systems
Ludwig prior to 0.17.8 on Python 3.12 and 3.13
CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Fix & remediation
Upgrade Ludwig to version 0.17.8 or later. If patching immediately is not possible, run on Python 3.14 or avoid loading datasets from untrusted or unverified URLs.
$ pip install --upgrade 'ludwig>=0.17.8'AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
Ludwig is a low-code framework for building custom LLMs, neural networks, and other AI models. Prior to 0.17.8, ludwig.datasets.archives.extract_archive() validated tar member names before calling TarFile.extractall() but did not validate symlink members or hard-link members. A crafted archive could create a link that escaped the extraction directory and then write a later member through that link, placing attacker-controlled content at an arbitrary filesystem path with the extracting process's privileges. The same containment check used os.path.commonprefix, so a sibling path sharing the destination's character prefix could also pass. The dataset-loading path can download and extract configured archive URLs, but exploitation requires a user to process an archive from a source controlled or compromised by the attacker on supported Python 3.12 and 3.13 runtimes. Python 3.14 is not affected because its default tar data filter rejects escaping links. This issue is fixed in version 0.17.8.