Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-100833

CVE-2026-100833HIGH

edgelesssys contrast — Contrast before 1.23.1 Image Substitution via Policy Generation

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   L   N   H   H   N    8.6   .0023   13.3     —

AFFECTED
  Product   Versions  Fixed
  contrast  1.14.0 –  1.23.1

TIMELINE
  Sep 26  Reserved by VulnCheck
  Sep 27  Published (CNA: VulnCheck)
  Oct 9   RESCORED — CVE-2026-100833 (edgelesssys contrast). CVSS 7.6 → 8.6 (NVD).

CWE-20 · CNA: VulnCheck · CVSS v4.0 · 2 references · NVD status: Deferred

Description

Contrast (edgelesssys/contrast) versions 1.14.0 before 1.23.1 generate runtime policies that fail to detect all container image substitutions. A bad rebase during a Kata Containers update accidentally introduced an `allow_storage` rule that accepts storage entries using the `image_guest_pull` driver without verifying the image digest. An attacker with access to the Kata agent API — for example, a Kubernetes cluster administrator in Contrast's threat model — can therefore substitute a container image with an exploit payload, provided the substituted image satisfies the remaining policy rules, undermining the confidential container's integrity guarantees.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 26, 2026	Reserved	Reserved by VulnCheck
September 27, 2026	Published	Published (CNA: VulnCheck)
October 9, 2026	RESCORED	RESCORED — CVE-2026-100833 (edgelesssys contrast). CVSS 7.6 → 8.6 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
edgelesssys	contrast	—	1.14.0	1.23.1

Weaknesses

CWE-20

References (2)

Authoritative record: CVE-2026-100833 at cve.org

Vendors: edgelesssys

Weaknesses: CWE-20

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-100833 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.