High 8.1Published Oct 14, 2026

CVE-2026-104103Ludwig: Path traversal in dataset archive extraction allows arbitrary file write via symlink members

Updated under an hour ago (2026-10-19 09:10 UTC)

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EPSS puts the chance of exploitation in the next 30 days at 0.49%, higher than 41% of scored CVEs.

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Exploited in the last 30 days

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.

CVSS: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Weakness (CWE): CWE-22, CWE-59
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.49% (percentile 41)
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

ludwig-ai ludwig ludwig_ai:ludwig (from the name)	before 0.17.8	CNA record

References

https://github.com/ludwig-ai/ludwig/security/advisories/GHSA-qvrm-3x4c-rcxfx-refsource-confirm
https://github.com/ludwig-ai/ludwig/commit/7f534f31e725cc5362c8f6f85537488443de279ax-refsource-misc
https://github.com/ludwig-ai/ludwig/releases/tag/v0.17.8x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.