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01 Record

CVE-2026-18157

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

HighPUBLISHEDCNA: redhat
CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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02 Description

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

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.35% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 29.0% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-23.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-07-31 02:38Z3 MO AGO
Last updated
2026-07-31 15:58Z3 MO AGO
Reserved
2026-07-28
Assigning CNA
redhat
Record state
PUBLISHED
Severity
High (CVSS 7.8)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')Base
Data version
5.2
Document digest
8b05d25583dbc4e8880e69a3d881090f3fb0871eb827f59de906d9d9634aab2c

05 Affected products

VendorProductVersionsPlatforms
RedHatInsightsyggdrasil-worker-package-manager0 to < 0.1.4, 0.2.0 to < 0.2.4—
Red HatRed Hat Enterprise Linux 10Not specified—

06 References