CVE-2026-100833

Description officielle (NVD)

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.

Preuves de concept publiques (1)

Dépôts tiers non vérifiés, parfois piégés. Ne les exécutez jamais en production : uniquement dans un environnement de test isolé.

• muhammad-usama-sardar/intra-handshake-fail · ★ 4 · 06/07/2026
  Early Attestation Considered Very Harmful (CVE-2026-100833 of CVSS 9.6, CVE-2026-108265 of CVSS 9.1, CVE-2026-108266 of CVSS 9.1, CVE-2026-108267 of CVSS 9.1, CVE-2026-108268 of CVSS 9.1, CVE-2026-108

Références

• 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

En bref

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/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

EPSS : probabilité estimée d'exploitation dans les 30 prochains jours.

Sources officielles

Besoin d'aide ?

Nos experts évaluent votre exposition et vous accompagnent dans la correction.