CVE-2021-29425

Possible limited path traversal vulnerabily in Apache Commons IO

State: Published
Severity: 6.5 Medium
Published: Apr 13, 2021
Updated: Oct 7, 2026
Reserved: Mar 30, 2021

Description

In Apache Commons IO before 2.7, When invoking the method FileNameUtils.normalize with an improper input string, like "//../foo", or "\\..\foo", the result would be the same value, thus possibly providing access to files in the parent directory, but not further above (thus "limited" path traversal), if the calling code would use the result to construct a path value.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N	CISA-ADP

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
Apache Commons IOApache Software Foundation	Apache Commons IO 2.2Affected Apache Commons IO 2.3Affected Apache Commons IO 2.4Affected Apache Commons IO 2.5Affected Apache Commons IO 2.6Affected

References

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