CVE-2026-100846CWE-502insecure-deserialization

CVE-2026-100846

High · published September 27, 2026

CVSS v3.1
7.6
EPSS
0%
Percentile
20.6
In the wild
Unconfirmed
What it is

MONAI before 1.5.2 contains a deserialization of untrusted data vulnerability in the algo_from_pickle function in monai/auto3dseg/utils.py. The function reads a .pkl file and passes its contents to pickle.loads without validating the data source or content. If an application invokes algo_from_pickle on an attacker-supplied pickle file, an object defining __reduce__ is executed during deserialization, resulting in arbitrary code execution in the context of the application.

The record
Technical detail
CVSS v3.1
7.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
8.8 · CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EPSS
0.00292 · 20.6th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-09-27T06:17Z
Affected products (1)
ProductVersionsFixed in
project-monai/monai< 1.5.21.5.2
References (3)
https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4 · [email protected]https://www.vulncheck.com/advisories/monai-before-1.5.2-remote-code-execution-via-pickle-deserialization · [email protected]https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 28 SEP 03:25Z
    EPSS moved — → 0%
    epss
  • 27 SEP 01:28Z
    MONAI before 1.5.2 Remote Code Execution via Pickle Deserialization
    cvelistv5