CVE-2026-100843 json
MONAI before 1.6.0 Remote Code Execution via algo_from_pickle
published 2mo ago modified last mo. also EUVD-2026-87845 , GHSA-qxq5-qhx6-94qw , PYSEC-2026-4018
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
MONAI versions before 1.6.0 contain a remote code execution vulnerability in the algo_from_pickle() function due to unsafe pickle.loads() deserialization in monai/auto3dseg/utils.py. Attackers can craft malicious pickle files that execute arbitrary system commands when deserialized by the vulnerable function.
Patch / fix
- pypi monai 1.6.0
- Project-MONAI MONAI 1.6.0
Is CVE-2026-100843 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- last mo.
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-qxq5-qhx6-94qw referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.5 | 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 |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 8.5 | 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 |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | monai | <1.6.0 |
1.6.0 |
Affected products
- Project-MONAI MONAI
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
github.com
/Project-MONAI/MONAI/security/advisories/GHSA-qxq5-qhx6-94qw
vendor-advisory, exploit, web, evidence
-
vulncheck.com
/advisories/monai-before-1.6.0-remote-code-execution-via-algo-from-pickle
third-party-advisory, advisory
-
github.com
/Project-MONAI/MONAI
package
-
github.com
/Project-MONAI/MONAI/releases/tag/1.6.0
web
-
github.com
/advisories/GHSA-89gg-p5r5-q6r4
advisory
Sources
- CVE List CVE-2026-100843
- GitHub Advisory GHSA-qxq5-qhx6-94qw
- NVD CVE-2026-100843
- OSV PYSEC-2026-4018
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.