Bug 2515343 (CVE-2026-67986)

Summary: CVE-2026-67986 amazing_print: amazing_print: Arbitrary code execution via Ruby code injection in AwesomeMethodArray#grep
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: anthomas, ehelms, ggainey, jpasqual, juwatts, mdellweg, mhulan, nmoumoul, osousa, pcreech, rchan, smallamp, tmalecek
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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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.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-08-13 14:01:02 UTC 
amazing-print/amazing_print at commit dc890dfafdf07088ea901df53c19c2710e5c5234 contains a Ruby code injection condition in AwesomeMethodArray#grep. A specially named method containing Ruby interpolation syntax can be interpolated into a dynamically constructed eval string when grep is called with a block, resulting in Ruby code execution in the host process. Exploitation requires an application path that allows an attacker to influence dynamic method names.