EUVD-2026-87842
GHSA-cvqf-4876-w239
Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
File-borne pickle requiring the victim to load an attacker artifact via algo_from_pickle, so AV:L and UI:R with no attacker privileges (PR:N); deserialization yields full code execution (C/I/A:H).
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
5Blast Radius
ecosystem impact- 1 pypi packages depend on monai (1 direct, 0 indirect)
Ecosystem-wide dependent count for version 1.6.0.
DescriptionCVE.org
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.
Articles & Coverage 1
AnalysisAI
Deserialization of untrusted data in MONAI's auto3dseg utility (monai/auto3dseg/utils.py) allows arbitrary code execution when algo_from_pickle() is called on an attacker-supplied .pkl file: the function reads the raw file bytes and hands them to pickle.loads() without any source or content validation, so any object defining __reduce__ runs in the victim application's context. Exploitation is conditional rather than remote-against-a-service: an attacker must first deliver a malicious pickle (model exchange, shared storage, or a pipeline input) and the victim's code must invoke this specific function, and per the authoritative assessment the vector is local with user interaction required (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) rather than unauthenticated network exploitation. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
No credit card · 7-day full trial
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires that the target application actually calls monai.auto3dseg.utils.algo_from_pickle() on an attacker-controlled .pkl file - i.e. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but conditional deserialization RCE (CWE-502): monai/auto3dseg/utils.py:algo_from_pickle() reads a .pkl file and passes its bytes to pickle.loads() with no source or content validation, so any object defining __reduce__ executes on load. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade to MONAI 1.6.0 (pip install --upgrade 'monai>=1.6.0'); the upstream fix is at https://github.com/Project-MONAI/MONAI/commit/9078a72f3992e49bd4560db510be9ec4ccf972cc and advisory GHSA-89gg-p5r5-q6r4. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems and pipelines using MONAI, especially the auto3dseg utility, and immediately block or restrict the loading of .pkl files from untrusted sources; instruct teams to avoid calling algo_from_pickle() on externally supplied files and verify the integrity of any required pickle files. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Wazuh SIEM platform versions 4.4.0 through 4.9.0 contain an unsafe deserialization vulnerability in the DistributedAPI t
BentoML version 1.4.2 and earlier contains an unauthenticated remote code execution vulnerability through insecure deser
pgAdmin 4 contains critical remote code execution vulnerabilities in the Query Tool download and Cloud Deployment endpoi
The renderLocalView function in render/views.py in graphite-web in Graphite 0.9.5 through 0.9.10 uses the pickle Python
BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Rated critica
OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCiph
pyLoad download manager version prior to 0.5.0b3.dev77 exposes the Flask SECRET_KEY through an unauthenticated endpoint.
Langflow (a visual LLM pipeline builder) contains a critical unauthenticated code execution vulnerability (CVE-2026-3301
In Mercurial before 4.1.3, "hg serve --stdio" allows remote authenticated users to launch the Python debugger, and conse
Unauthenticated remote code execution affects Kestra OSS (the open-source event-driven orchestration platform) prior to
Unauthenticated remote code execution in Marimo ≤0.20.4 allows attackers to execute arbitrary system commands via the `/
pyLoad is the free and open-source Download Manager written in pure Python. Rated medium severity (CVSS 5.3), this vulne
Same weakness CWE-502 – Deserialization of Untrusted Data
View allShare
External POC / Exploit Code
Leaving vuln.today