External Control of File Name or Path Affecting busybox package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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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Test your applications- Snyk IDSNYK-UNMANAGED-BUSYBOX-15285603
- published16 Feb 2026
- disclosed11 Feb 2026
- creditUnknown
Introduced: 11 Feb 2026
CVE-2026-26157 (opens in a new tab)How to fix?
There is no fixed version for busybox.
Overview
Affected versions of this package are vulnerable to External Control of File Name or Path via incomplete sanitization of trailing '..' in archive extraction paths. An attacker can overwrite arbitrary files and potentially execute code by crafting malicious archives that, when extracted, write files outside the intended directory.
Note: This vulnerability is applicable when the current working directory matches the target location.
Workaround
This vulnerability can be mitigated by avoiding extracting archives from untrusted sources with BusyBox utilities, or by performing extraction in an isolated environment, such as a container with a read-only root filesystem and minimal privileges.