CVE-2026-109153

CVSS 6.3 (medium) · published 2026-10-13

A vulnerability was detected in MosaicML Composer up to 0.32.1. This affects the function tarball.extractall of the file composer/utils/checkpoint.py of the component Checkpoint Extraction. The manipulation results in path traversal. The attack can be executed remotely. The vendor was contacted early about this disclosure.

Weakness: CWE-22

Source: NVD CVE-2026-109153

References

• https://github.com/mosaicml/composer/
• https://github.com/mosaicml/composer/issues/3942
• https://vuldb.com/cve/CVE-2026-109153
• https://vuldb.com/submit/978647
• https://vuldb.com/vuln/416887
• https://vuldb.com/vuln/416887/cti

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