CRLF Injection Affecting sandboxie-plus/Sandboxie package, versions [,1.17.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published6 May 2026
- disclosed5 May 2026
- creditsammy12342
Introduced: 5 May 2026
CVE-2026-34458 (opens in a new tab)How to fix?
Upgrade sandboxie-plus/Sandboxie to version 1.17.3 or higher.
Overview
Affected versions of this package are vulnerable to CRLF Injection in the handling of IPC messages targeting sections beginning with UserSettings_ in the background service. An attacker can inject arbitrary directives into the global configuration file by including CRLF characters in the value or setting name parameters, resulting in the creation of new sandbox section headers with unrestricted permissions. This enables privilege escalation and escape from the sandbox environment.