Bug 2463379 (CVE-2026-41526)

Summary: CVE-2026-41526 kcoreaddons: KDE KCoreAddons: Arbitrary code execution via improper shell argument quoting
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in KDE KCoreAddons. The KShell::quoteArgs function, intended to safely quote arguments for shell commands, does not properly handle special characters. This vulnerability allows an attacker to inject control characters, such as \x01, leading to an escape from the shell. Consequently, applications that use this function to process untrusted user input in a security-critical context could be exploited, potentially resulting in arbitrary code execution.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2463477, 2463478    
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Description OSIDB Bzimport 2026-04-28 08:01:46 UTC 
In KDE KCoreAddons before 6.25, KShell::quoteArgs is intended to safely quote arguments so that they can be passed to a shell command. This parsing does not adequately handle metacharacters, leading to an escape from the shell. All applications relying on this method in a security-critical path to handle user input are affected and could be exploited. In particular, because sendInput() sends a string to a terminal, a control character such as \x01 can be used during injection.