What’s Vulnerable › Vulnerabilities

CVE-2026-18157: Yggdrasil-worker-package-manager: yggdrasil-worker-package-manager: remote code execution via apt argument injection

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-31 · updated 2026-10-23
• Weakness: CWE-88

Description

A flaw was found in yggdrasil-worker-package-manager. A local attacker with existing access to the system could exploit an argument injection vulnerability in the APT backend. This allows specially crafted package names, which begin with a hyphen, to be misinterpreted as command options by apt-get. Successful exploitation could lead to remote code execution (RCE) with root privileges, enabling the attacker to fully compromise the system's integrity, confidentiality, and availability.

Affected products

• RedHatInsights yggdrasil-worker-package-manager: before 0.1.4; from 0.2.0 before 0.2.4 — fixed in 0.1.4, 0.2.4

How to fix

Upgrade to a fixed version: RedHatInsights yggdrasil-worker-package-manager 0.1.4, 0.2.4. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/security/cve/CVE-2026-18157
• https://bugzilla.redhat.com/show_bug.cgi?id=2465250
• https://github.com/RedHatInsights/yggdrasil-worker-package-manager/commit/959745bb5917c17f0316af199aace6c71baa5ad7
• https://github.com/RedHatInsights/yggdrasil-worker-package-manager/releases/tag/0.1.4
• https://github.com/RedHatInsights/yggdrasil-worker-package-manager/releases/tag/0.2.4

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