CVE-2026-76843
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk30th percentile - higher than 30% of all known CVEs
Summary
Official Flair wheels for versions 0.15.0 and 0.15.1 still contain flair/models/clustering.py, which executes arbitrary Python code when loading a model. The previous fix for CVE-2024-10073 does not remove this issue from the distributed package.
Risk Assessment
Loading a model supplied by an attacker can execute their code with the privileges of the loading process, potentially leading to full system compromise.
Recommendation
Do not load models from untrusted sources. Update Flair to a version that actually removes this file, or apply a workaround by manually deleting the vulnerable module.
Related vulnerabilities
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- CVE-2026-120239Critical
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- CVE-2026-120238Critical
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- CVE-2026-120231Critical
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- CVE-2026-120229Critical
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- CVE-2026-120228Critical
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In Beta9, a tenant can attach a volume when deploying a function, endpoint, or task queue. The gateway builds the host path by joining the shared volumes root, the workspace name, and the volume identifier from the stub configuration, without checking that the identifier names a volume owned by that workspace. Parent-directory segments in the identifier collapse the joined path to the worker's filesystem root, which is bind-mounted read-write into the sandbox, allowing read and write access to the worker's files, including other tenants' volumes.
Original NVD description (English source)
The official Flair wheels for 0.15.0 and 0.15.1 still contain flair/models/clustering.py, whose ClusteringModel.load static method returns pickle.loads(joblib.load(str(model_file))) and so executes arbitrary Python while loading a model file. Loading a model supplied by an attacker therefore runs that attacker's code with the privileges of the loading process. This is the same sink and the same file as CVE-2024-10073, which records 0.15.0 as the fixed version on the basis that clustering support was dropped in that release; the module was removed from the documented API but remains present in the distributed artifact and reachable by importing flair.models.clustering directly, so the earlier record's fixed version does not hold for the shipped package.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

