Security Flaw in RubyGem Safemode Affects Red Hat Users
CVE-2026-107360

9.6CRITICAL

Key Information:

Vendor

Red Hat
Status
Red Hat Satellite 6
Vendor
CVE Published:
12 November 2026

What is CVE-2026-107360?

A security flaw in RubyGem Safemode allows authenticated attackers to bypass method call mediations when using compound assignment expressions in sandboxed code. This vulnerability can result in the execution of arbitrary no-argument methods on objects exposed to the template renderer. As a consequence, this could lead to destructive operations such as host deletion and the unauthorized disclosure of non-allow-listed object states. Users are advised to review their configurations and implement appropriate mitigations.

References

https://access.redhat.com/security/cve/CVE-2026-107360
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2547645
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
9.6
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Kaya Emre Arikan for reporting this issue.
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