🛡️ CVE-2026-18157

🟠 CVSS 7.8 — High ✅ No Known Exploit CWE-88 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-18157 is classified as CWE-88: Argument Injection. Input is passed into a command line without separating data from options, letting an attacker introduce extra arguments.

Affected software

CVE-2026-18157 is recorded against 1 package.

  • unknown

Timeline and source

Published on 31 July 2026 and last revised on 3 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

access.redhat.com
bugzilla.redhat.com
github.com
github.com
github.com

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-88
Public Exploit ✅ No
Source NVD
Published 2026-07-31
Updated 2026-08-11
Modified 2026-08-03
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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