---
title: "CVE-2026-100833: Contrast - Broken Access Control"
description: "Contrast (edgelesssys/contrast) < 1.23.1 contains a broken access control vulnerability caused by an improper allow_storage rule in runtime policies, letting attackers with Kata agent API access substitute container images, exploit requires attacker access to Kata agent API."
url: https://panop.io/threat-heartbeat/CVE-2026-100833/
---

# CVE-2026-100833 Contrast - Broken Access Control

Contrast (edgelesssys/contrast) < 1.23.1 contains a broken access control vulnerability caused by an improper allow\_storage rule in runtime policies, letting attackers with Kata agent API access substitute container images, exploit requires attacker access to Kata agent API.

CVSS base score 9.6 /10

Critical

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Required

EPSS

0.23% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-100833)

## Details

Type

Broken Access Control

Impact

Broken Access Control, Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Published

27 September 2026

Updated

15 October 2026

Weakness

[CWE-20](https://cwe.mitre.org/data/definitions/20.html)

## Vendor fix

Upgrade to version 1.23.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-100833](https://nvd.nist.gov/vuln/detail/CVE-2026-100833)
- [https://github.com/edgelesssys/contrast/security/advisories/GHSA-m2qg-wrxv-h898](https://github.com/edgelesssys/contrast/security/advisories/GHSA-m2qg-wrxv-h898)
- [https://www.vulncheck.com/advisories/contrast-before-1.23.1-image-substitution-via-policy-generation](https://www.vulncheck.com/advisories/contrast-before-1.23.1-image-substitution-via-policy-generation)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)