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Fencer Intel
high 7.5

CVE-2025-27553 json

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

published last yr. modified 4mo ago also EUVD-2025-7319 , GHSA-9q4x-fr4m-jp86

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.apache.commons:commons-vfs2 2.10.0
  • Apache Software Foundation Apache Commons VFS 2.10.0
  • commons-vfs Debian 12 2.1-4+deb12u1
  • commons-vfs Debian 14, Debian 13 2.1-5

debian advisories DEBIAN-CVE-2025-27553

  • apache-commons-vfs RHEL 7 ELS 2.0-11.el7_9.1
  • apache-commons-vfs-ant RHEL 7 ELS 2.0-11.el7_9.1
  • apache-commons-vfs-javadoc RHEL 7 ELS 2.0-11.el7_9.1
  • apache-commons-vfs-examples RHEL 7 ELS 2.0-11.el7_9.1

red hat advisories RHSA-2025:10548

  • apache-commons-vfs2 openSUSE Leap 15.6 2.10.0-150200.3.3.1

suse advisories SUSE-SU-2025:1022-1

  • apache-commons-vfs2 openSUSE Tumbleweed 2.10.0-1.1

opensuse advisories openSUSE-SU-2025:14929-1

Is CVE-2025-27553 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-27553 updated cvss 5.3

apache-commons-vfs: Apache Commons VFS: Possible path traversal issue when using NameScope.DESCENDENT

  • Red Hat Enterprise Linux Server Optional (v. 7 ELS) apache-commons-vfs 2.0-11.el7_9.1, apache-commons-vfs-ant 2.0-11.el7_9.1, apache-commons-vfs-javadoc 2.0-11.el7_9.1, apache-commons-vfs-examples 2.0-11.el7_9.1
    fixed: vendor fix RHSA-2025:10548

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
last yr.

Exploit prediction

1.43% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.commons:commons-vfs2
<2.10.0
2.10.0

Affected products

  • Apache Software Foundation Apache Commons VFS

Classification

Weakness
  • CWE-23 Relative Path Traversal

References

Sources

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