CVE-2026-76843

Flair 0.15.0 and 0.15.1 Deserialization of Untrusted Data via ClusteringModel.load

State
Published
Severity
8.4 High
Published
Aug 24, 2026
Updated
Aug 28, 2026
Reserved
Aug 19, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
4.08.4 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NVulnCheck
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HVulnCheck

Weaknesses

  • CWE-502 Deserialization of Untrusted Data

Affected Products

ProductVersions
flairflairNLP
  • 0.15.0 through 0.15.1Affected

References

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