EUVD-2026-87848
GHSA-8jxj-xq3g-hvm2
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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
Untrusted bundle must be loaded locally by the victim (AV:L, UI:R), no auth or privilege needed (PR:N), yielding full code execution in the process (C/I/A:H, S:U).
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
MONAI through 1.6.0 contains a remote code execution vulnerability in the bundle configuration engine that resolves _target_ values to arbitrary importable callables without an allow list and passes $ expressions to Python eval(). Attackers can publish a malicious bundle with crafted configuration containing arbitrary code that executes when a victim loads the bundle using monai.bundle.load() or monai.bundle.run().
Articles & Coverage 1
AnalysisAI
MONAI through 1.6.0 will execute arbitrary code in the victim's process when it loads an attacker-supplied bundle, because the bundle configuration engine resolves '_target_' values to any importable callable without an allow list and passes '$' expressions straight to Python's eval(). An attacker who publishes or shares a crafted bundle achieves code execution as soon as an operator calls monai.bundle.load() or monai.bundle.run() on it; no credentials are required against the victim (PR:N), but the attack does depend on user interaction (UI:R) since the operator must obtain and load an untrusted bundle, and the payload runs with the privileges of the loading process. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to load an attacker-controlled MONAI bundle via `monai.bundle.load()` or `monai.bundle.run()`; the bundle configuration must contain a malicious `_target_` referencing an arbitrary importable callable or a `$` expression that reaches Python `eval()`, neither of which is constrained by an allow list in MONAI through 1.6.0. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine code-execution flaw (CWE-95, eval injection) in MONAI's bundle configuration engine, where `_target_` values resolve to arbitrary importable callables without an allow list and `$` expressions are passed to Python `eval()`. … 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 | No vendor-released patch version is confirmed in the available data, so the first step is to consult the GitHub security advisory GHSA-873f-pvrv-4x83 (https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-873f-pvrv-4x83) and the VulnCheck advisory (https://www.vulncheck.com/advisories/monai-through-1.6.0-remote-code-execution-via-bundle-configuration) for an updated release and upgrade to the first patched version as soon as it is identified; until then, treat every bundle as untrusted input. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all MONAI 1.6.0 and earlier deployments and identify any workflows that call monai.bundle.load() or monai.bundle.run() on third-party or community-contributed bundles; block loading of untrusted bundles and notify affected ML/AI teams. …
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External POC / Exploit Code
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