CVE-2026-100846
MONAI before 1.5.2 contains a deserialization of untrusted data vulnerability in the algo_from_pickle function in monai/auto3dseg/utils.py.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 4.0
- 8.8 HIGHCVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.36% probability · 30th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- project-monai/monai
- Source
- disclosure@vulncheck.com
EPSS moved from 0.3% on 27 September 2026 to 0.4% on 26 October 2026.
References
- https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4Exploit, Vendor Advisory
- https://www.vulncheck.com/advisories/monai-before-1.5.2-remote-code-execution-via-pickle-deserializationThird Party Advisory
- https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4Exploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.