CVE-2026-100842

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.1% (3rd percentile of EPSS-scored CVEs). GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 8.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

MONAI through 1.6.0 contains an eval injection vulnerability in _get_fake_spatial_shape() in monai/bundle/scripts.py. The function validates shape expressions with a helper that walks the AST and only collects ast.Name nodes, rejecting any name other than 'p' or 'n', before passing the string to eval(). Expressions built solely from constants and attribute, subscript, or call nodes (for example "(1).__class__.__bases__[0].__subclasses__()" or "int.__class__.__init__.__globals__") contain no ast.Name nodes and therefore bypass the allowlist. Because the shape value originates from bundle metadata consumed by _get_real_input_data and verify_net_in_out (reachable through the bundle 'verify_net_in_out' CLI flow), an attacker who can influence a bundle's metadata can escape the eval sandbox via object introspection chains and achieve code execution in this non-default flow.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.1%
EPSS %ILE
3rd
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 27, 2026

Last Modified

September 30, 2026

Advisory Details (2)

Auto-updated Sep 27, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

MONAI through 1.6.0 _get_fake_spatial_shape eval() Sandbox Bypass via Attribute Chains | Advisories | VulnCheck

https://www.vulncheck.com/advisories/monai-through-1.6.0-get-fake-spatial-shape-eval-sandbox-bypass-via-attribute-chains
github Patch Available🟡 PoC Available

_get_fake_spatial_shape() ast.Name-only allowlist bypassable via Attribute chains — eval sandbox escape · Advisory · Project-MONAI/MONAI · GitHub

https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-h89g-r5pc-wxfm

Vendor Advisories for CVE-2026-100842(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
monai0.0.1 ... 1.6.0 (44 versions)1.6.1rc0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 33× in last 7d / 36× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 12:43 UTCGHSA enrichment
  2. 2026-10-03 23:47 UTCEG score recompute
  3. 2026-10-03 23:47 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 10:49 UTCGHSA enrichment
  6. 2026-10-02 21:53 UTCEG score recompute
  7. 2026-10-02 21:53 UTCGHSA enrichment
  8. 2026-10-02 08:56 UTCGHSA enrichment
  9. 2026-10-01 19:59 UTCEG score recompute
  10. 2026-10-01 19:59 UTCGHSA enrichment
  11. 2026-10-01 19:49 UTCEPSS rescore
  12. 2026-10-01 07:03 UTCGHSA enrichment
  13. 2026-09-30 18:07 UTCEG score recompute▲ 1.80
  14. 2026-09-30 18:07 UTCGHSA enrichment
  15. 2026-09-30 18:04 UTCNVD updateCVSS v3 → 8.8
  16. 2026-09-30 17:27 UTCEG score recompute
  17. 2026-09-30 17:27 UTCGHSA enrichment
  18. 2026-09-30 17:01 UTCEG score recompute
  19. 2026-09-30 17:01 UTCGHSA enrichment
  20. 2026-09-30 15:02 UTCEPSS rescore
  21. 2026-09-30 12:43 UTCGHSA enrichment
  22. 2026-09-29 23:47 UTCEG score recompute
  23. 2026-09-29 23:47 UTCGHSA enrichment
  24. 2026-09-29 15:20 UTCEPSS rescore
  25. 2026-09-29 10:15 UTCEG score recompute
Show 11 more
  1. 2026-09-29 10:15 UTCGHSA enrichment
  2. 2026-09-28 21:13 UTCGHSA enrichment
  3. 2026-09-28 17:30 UTCEG score recompute
  4. 2026-09-28 17:30 UTCGHSA enrichment
  5. 2026-09-28 13:50 UTCEPSS rescore
  6. 2026-09-28 04:30 UTCGHSA enrichment
  7. 2026-09-27 15:34 UTCEG score recompute
  8. 2026-09-27 15:34 UTCGHSA enrichment
  9. 2026-09-27 02:37 UTCEG score recompute
  10. 2026-09-27 01:53 UTCEG score recompute
  11. 2026-09-27 01:49 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-100842?
CVE-2026-100842 is a high vulnerability published on September 27, 2026. MONAI through 1.6.0 contains an eval injection vulnerability in getfakespatialshape() in monai/bundle/scripts.py. The function validates shape expressions with a helper that walks the AST and only collects ast.Name nodes, rejecting any name other than 'p' or 'n', before passing the string to…
When was CVE-2026-100842 disclosed?
CVE-2026-100842 was first published on September 27, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100842 actively exploited?
CVE-2026-100842 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100842?
CVE-2026-100842 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-100842?
A fix for CVE-2026-100842 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100842 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-100842

Explore →

Is Your Infrastructure Affected by CVE-2026-100842?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs