CVE-2026-67986
Description
A flaw was found in amazing_print. This vulnerability allows an attacker to inject and execute arbitrary Ruby code within the host process. The flaw occurs when the grep method is called with a block, and a specially crafted method name containing Ruby interpolation syntax is processed. Successful exploitation requires the attacker to influence dynamic method names through an application path.
Statement
Red Hat Satellite includes the rubygem-amazing_print package as a dependency of the hammer CLI tool. While the vulnerable code exists in the shipped version, the specific code path that enables exploitation — calling grep with a block on method arrays — is not used by Satellite or any of its components. The gem is used solely for debug-level object formatting. As a result, this vulnerability is not exploitable in Red Hat Satellite as shipped.
Mitigation
No action is required. The vulnerable code path in amazing_print is not reachable through normal Satellite operation. Customers who have developed custom scripts or plugins that call amazing_print's method array grep with a block should avoid passing untrusted input into method introspection until an upstream fix is available.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.8 | N/A | 8.4 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | High | N/A | High |
| Integrity Impact | High | N/A | High |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism
In some cases, injectable code controls authentication; this may lead to a remote vulnerability.
Access Control
Technical Impact: Gain Privileges or Assume Identity
Injected code can access resources that the attacker is directly prevented from accessing.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
When a product allows a user's input to contain code syntax, it might be possible for an attacker to craft the code in such a way that it will alter the intended control flow of the product. As a result, code injection can often result in the execution of arbitrary code. Code injection attacks can also lead to loss of data integrity in nearly all cases, since the control-plane data injected is always incidental to data recall or writing.
Non-Repudiation
Technical Impact: Hide Activities
Often the actions performed by injected control code are unlogged.
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