A flaw was found in rubygem-safemode. Compound assignment expressions in sandboxed code are evaluated without mediating method calls through the Jail allow-list. An authenticated attacker who can supply template content can invoke arbitrary no-argument methods on objects exposed to the template renderer without Jail mediation, including destructive operations such as host deletion and disclosure of non-allow-listed object state.

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Fixes

Solution

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Workaround

Restrict template edit privileges to trusted administrators until a fixed safemode release is deployed. Where feasible, avoid exposing highly privileged ActiveRecord objects to untrusted template authors.

History

Thu, 12 Nov 2026 20:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in rubygem-safemode. Compound assignment expressions in sandboxed code are evaluated without mediating method calls through the Jail allow-list. An authenticated attacker who can supply template content can invoke arbitrary no-argument methods on objects exposed to the template renderer without Jail mediation, including destructive operations such as host deletion and disclosure of non-allow-listed object state.
Title Rubygem-safemode: safemode: jail allow-list bypass via op-assign expressions
First Time appeared Redhat
Redhat satellite
Weaknesses CWE-183
CPEs cpe:/a:redhat:satellite:6
Vendors & Products Redhat
Redhat satellite
References
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-11-12T20:04:13.447Z

Reserved: 2026-10-07T20:07:22.060Z

Link: CVE-2026-107360

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-12T20:18:14.907

Modified: 2026-11-12T20:18:15.073

Link: CVE-2026-107360

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses