CVE-2026-109358: Incorrect Permission Assignment for Critical Resource in edgelesssys contrast
Description
Edgeless Systems Contrast versions 1.8.0 up to but not including 1.24.1 have a vulnerability where the node installer sets the containerd configuration file permissions to world-writable (0666). This misconfiguration allows local unprivileged users on the node to modify the containerd config, potentially overwriting critical settings such as the runc location, which can lead to privilege escalation.
CVSS v4.0
Score 8.5high
Affected software
edgelesssys
contrast
pkg:github/edgelesssys/contrastRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-109358 describes an incorrect permission assignment vulnerability in Edgeless Systems Contrast. Specifically, the node installer writes the containerd configuration file with world-writable permissions (0666), allowing local unprivileged users to modify the configuration. This can be exploited to overwrite the runc binary location, enabling privilege escalation on the affected system. The vulnerability affects versions from 1.8.0 up to but not including 1.24.1.
Potential Impact
Local unprivileged users on the node can modify the containerd configuration file due to overly permissive file permissions. This can lead to privilege escalation by changing critical runtime parameters such as the runc binary location, potentially compromising the host system's security.
Mitigation Recommendations
A fix is available in Edgeless Systems Contrast version 1.24.1 and later. Users should upgrade to version 1.24.1 or newer to remediate this vulnerability. Until upgraded, restrict local access to trusted users only to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-12T14:21:32.594Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6acd0c192cdf04f656b11c13
Added to database: 10/12/2026, 16:34:33 UTC
Last enriched: 10/12/2026, 16:49:02 UTC
Last updated: 10/12/2026, 21:46:37 UTC
Views: 10
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