CVE-2025-27553

Apache Commons VFS: Possible path traversal issue when using NameScope.DESCENDENT

Description

Relative Path Traversal vulnerability in Apache Commons VFS before 2.10.0. The FileObject API in Commons VFS has a 'resolveFile' method that takes a 'scope' parameter. Specifying 'NameScope.DESCENDENT' promises that "an exception is thrown if the resolved file is not a descendent of the base file". However, when the path contains encoded ".." characters (for example, "%2E%2E/bar.txt"), it might return file objects that are not a descendent of the base file, without throwing an exception. This issue affects Apache Commons VFS: before 2.10.0. Users are recommended to upgrade to version 2.10.0, which fixes the issue.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.12%
Vendor Advisory apache.org
Affected: Apache Software Foundation Apache Commons VFS
Published at:
Updated at:

References

Link Tags
https://lists.apache.org/thread/cnzqowyw9r2pl263cylmxhnvh41hyjcb vendor advisory mailing list
http://www.openwall.com/lists/oss-security/2025/03/23/1 mailing list third party advisory
https://lists.debian.org/debian-lts-announce/2025/04/msg00006.html

Frequently Asked Questions

What is the severity of CVE-2025-27553?
CVE-2025-27553 has been scored as a high severity vulnerability.
How to fix CVE-2025-27553?
To fix CVE-2025-27553, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-27553 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-27553 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-27553?
CVE-2025-27553 affects Apache Software Foundation Apache Commons VFS.
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