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CVE-2026-100840VulnerabilityPublished

MONAI through 1.6.0 contains a remote code execution vulnerability in the bundle configuration engine that resolves

Source GCVE Database

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Authoritative record:CVE-2026-100840· High 8.5

Not known to be exploited · CVSS 8.5 High.

Data as of 11 Nov 2026, 23:24 UTC

CVSS 4.0 base score
8.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 27 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CISA SSVC: proof of concept public

  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

Timeline

  1. CVE ID reserved

    by VulnCheck

    , 2 hours before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. CISA SSVC assessment

    proof of concept public

    , 39 hours after disclosure

  4. In Threat Radar

    record ingested

    , 29 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA SSVC, the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Project-MONAIMONAIAffected
  • <=1.6.0
Fixed in–
PyPIMONAIpkg:pypi/MONAIOther threatsAffected
  • <=1.6.0
Fixed in–

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

AI-suggested

Until a fix is available, avoid loading or running bundles from untrusted sources to prevent exploitation.

Description

MONAI versions through 1.6.0 have a remote code execution vulnerability in the bundle configuration engine. This flaw occurs because the engine resolves _target_ values to arbitrary importable callables without an allow list and evaluates $ expressions using Python eval(). An attacker can craft a malicious bundle configuration that executes arbitrary code when loaded or run with monai.bundle.load() or monai.bundle.run().

References

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