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VulnerabilityPublished

CVE-2026-118684: MONAI · Weak Cryptography

Affects MONAISource CVE Database V5

0

Not known to be exploited · CVSS 8.2 High : upgrade to 1.6.1 soon.

Data as of 28 Oct 2026, 19:27 UTC

CVSS 4.0 base score
8.2High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 1.6.1
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade MONAI to 1.6.1.

Affected software

ProductAffectedFixed in
Project-MONAIMONAIAffected
  • <1.6.1
Fixed in
  • 1.6.1
PyPIMONAIpkg:pypi/MONAIOther threatsAffected
  • <1.6.1
Fixed in
  • 1.6.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade MONAI to version 1.6.1 or later, where this vulnerability is fixed. The fix addresses the insufficient integrity verification and removes reliance on the insecure MD5 hash as default. No other mitigation steps are indicated.

Description

MONAI versions before 1.6.1 have a vulnerability in the check_hash() function where the integrity verification is insufficient. Specifically, if the hash value is None, the function incorrectly returns True, and MD5 is used as the default hash algorithm. This flaw allows attackers who can perform man-in-the-middle or registry compromise attacks to substitute malicious bundles, datasets, or model archives downloaded without hashes, potentially leading to malicious file delivery and code execution.

References

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