CVE-2026-18157
Yggdrasil-worker-package-manager: yggdrasil-worker-package-manager: remote code execution via apt argument injection
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.
INFO
Published Date :
July 31, 2026, 3:16 a.m.
Last Modified :
July 31, 2026, 3:16 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-18157
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 53f830b8-0a3f-465b-8143-3b8a9948e749 | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Validate and sanitize package names.
- Reject package names starting with a hyphen.
- Update yggdrasil-worker-package-manager.
- Review apt-get configurations.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-18157.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-18157 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-18157
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-18157 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-18157 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Jul. 31, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'RedHatInsights', 'product': 'yggdrasil-worker-package-manager', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '0.1.4', 'versionType': 'semver'}, {'status': 'affected', 'version': '0.2.0', 'lessThan': '0.2.4', 'versionType': 'semver'}], 'packageName': 'yggdrasil-worker-package-manager', 'collectionURL': 'https://github.com/RedHatInsights/yggdrasil-worker-package-manager', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 10', 'packageName': 'yggdrasil-worker-package-manager', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-88 Added Reference https://access.redhat.com/security/cve/CVE-2026-18157 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2465250 Added Reference https://github.com/RedHatInsights/yggdrasil-worker-package-manager/commit/959745bb5917c17f0316af199aace6c71baa5ad7 Added Reference https://github.com/RedHatInsights/yggdrasil-worker-package-manager/releases/tag/0.1.4 Added Reference https://github.com/RedHatInsights/yggdrasil-worker-package-manager/releases/tag/0.2.4