Deserialization in Piskvorky Gensim
CVE-2026-94091
A weakness has been identified in piskvorky gensim up to 4.4.0. The impacted element is the function Load of the file gensim/utils.py of the component Model Loader. This manipulation of the argument fname causes deserialization. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. Maintainer closed #3663 same-day with no comment, PR, or fix; repo's last push (2025-11-01) predates the report, so the unsafe pickle.load in SaveLoad.load remains unguarded at develop HEAD.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (27.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Piskvorky Gensim — versions 4.0, 4.1, 4.2
Weakness classification (CWE)
References
- vuldb.com/vuln/408020 (technical-description, vdb-entry)
- vuldb.com/vuln/408020/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-94091 (third-party-advisory)
- vuldb.com/submit/952644 (third-party-advisory)
- github.com/piskvorky/gensim/issues/3663 (issue-tracking, exploit)
- github.com/piskvorky/gensim/ (product)
Frequently asked questions
- What is CVE-2026-94091?
- CVE-2026-94091 is a medium-severity vulnerability in Piskvorky Gensim, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2026-09-20.
- How severe is CVE-2026-94091?
- Medium severity. CVSS v3 base score is 5.5 out of 10.