CVE-2026-87114
Description
A flaw was found in kube-compare. When processing a 'container://' reference path, the tool incorrectly executes an untrusted container image's entrypoint instead of merely extracting data from a stopped container. This allows a remote attacker to achieve arbitrary code execution on the operator's workstation. If the Docker daemon requires elevated privileges, the untrusted code may execute with root-mediated daemon privileges, posing a significant security risk.
Statement
This Important vulnerability in kube-compare allows arbitrary code execution on an operator's workstation. When kube-compare processes a malicious container:// reference, and docker is configured to require sudo for daemon access, the untrusted image's entrypoint executes with root-mediated privileges. This risk is specific to environments where kube-compare interacts with docker requiring elevated permissions.
Mitigation
To mitigate this issue, users of `kube-compare` should ensure that any container images referenced via the `container://` scheme are from trusted sources. Avoid using untrusted or unverified container images as reference paths. If `docker` is configured to require `sudo` for daemon socket access, consider reviewing `sudo` policies to limit `docker` command execution to trusted users and contexts.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.1 | N/A | 7.1 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | Required |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | High | N/A | High |
| Integrity Impact | High | N/A | High |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
cve.org: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
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