#VU106082 Path traversal in Apache Commons VFS - CVE-2025-27553

Vulnerability identifier: #VU106082

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-27553

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Commons VFS
Universal components / Libraries / Software for developers

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing double dots, e.g. ".." in file names. A remote attacker can view files outside of the current scope.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Commons VFS: 1.0 - 2.9.0

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External links
https://lists.apache.org/thread/6ldr41qyd88971tm00kh1f51cfcg6xh2

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.