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Medium 5.9Published Oct 28, 2026

CVE-2026-118684MONAI before 1.6.1 Missing Integrity Verification via check_hash in Downloads

Updated under an hour ago ()

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It affects Project-MONAI MONAI. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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MONAI before 1.6.1 contains an insufficient integrity verification vulnerability in check_hash() that silently returns True when hash_val is None, with MD5 as the default hash type. Attackers performing man-in-the-middle or registry compromise can substitute bundles, datasets, or model archives downloaded without hashes, enabling malicious file delivery and potential code execution.

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CVSS
5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE)
CWE-327
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
VulnCheck
NVD analysis
Deferred
Record last updated
Oct 28, 2026
First seen by InfoSec Signals
Oct 28, 2026

Affected products

Affected products
Project-MONAI MONAI
project_monai:monai (from the name)
before 1.6.1; 1.6.1 not affected
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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CVE-2026-118684: MONAI before 1.6.1 Missing Integrity Verification via check_hash in Downloads | InfoSec Signals