CVE-2026-109358— Edgeless Systems Contrast 1.8.0 before 1.24.1 World-Writable Containerd Config Privilege Escalation
Quick assessment
Affected
edgelesssys contrast
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Edgeless Systems Contrast 1.8.0 至 1.24.1（不含 1.24.1）版本中存在权限配置错误漏洞。该漏洞源于节点安装程序将 containerd 配置文件设置为全局可写（权限为 0666）。节点上未经身份验证的本地用户可借此修改 containerd 配置文件，例如覆盖 runc 的路径，从而提升系统权限。
Possible ATT&CK Techniques 1 AI
T1548.001 · Setuid and SetgidAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| edgelesssys | contrast | 1.8.0< 1.24.1 |
affected |
1.24.1 |
unaffected |
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I. Basic Information for CVE-2026-109358
Vulnerability Information
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Vulnerability Title
Edgeless Systems Contrast 1.8.0 before 1.24.1 World-Writable Containerd Config Privilege Escalation
Source: CVE Program / CVE List V5
Vulnerability Description
Edgeless Systems Contrast 1.8.0 before 1.24.1 contains an incorrect permissions vulnerability where the node installer writes the containerd config world-writable (0666). Local unprivileged users on the node can modify the containerd config, for example overwriting the runc location, to escalate privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| edgelesssys | contrast | 1.8.0 ~ 1.24.1 | - |
|
II. Public POCs for CVE-2026-109358
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-109358 (1)
News Coverage for CVE-2026-109358 (1)
IV. Related Vulnerabilities
Same product: contrast
-
CVE-2026-109359
Contrast 1.8.0 before 1.24.1 Mesh CA Key Cross-Manifest Expo -
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Edgeless Systems Contrast through 1.20.0 Denial of Service v -
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Contrast before 1.18.0 AML Injection Remote Code Execution -
CVE-2026-100838
Contrast before 1.19.1 CopyFile Policy Symlink Subversion
Same vendor: edgelesssys
-
CVE-2026-109359
Contrast 1.8.0 before 1.24.1 Mesh CA Key Cross-Manifest Expo -
CVE-2026-100837
Edgeless Systems Contrast through 1.20.0 Credential Leak via -
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Edgeless Systems Contrast through 1.20.0 Denial of Service v -
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Contrast before 1.18.0 AML Injection Remote Code Execution -
CVE-2026-100838
Contrast before 1.19.1 CopyFile Policy Symlink Subversion
Same weakness: CWE-732
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V. Comments for CVE-2026-109358
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