Read the docs
TI-2025-20373 Aliases CVE-2025-27553GHSA-9q4x-fr4m-jp86

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

Priority MEDIUM 42CWE-23Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-23 and the CVSS impact.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01425 73rd percentileScored 2026-11-07
Fix Fixed Apache Commons VFS (Apache Software Foundation): 2.10.0org.apache.commons:commons-vfs2 (Maven): 2.10.0Red Hat: 1 advisory

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Commons VFSbefore 2.10.02.10.0Patch availableCNA
—org.apache.commons:commons-vfs2 (Maven)before 2.10.02.10.0Patch availableGHSA-9q4x-fr4m-jp86
  • Apache Commons VFS VendorApache Affected before 2.10.0 Fixed in 2.10.0 Patch available CNA
  • org.apache.commons:commons-vfs2 (Maven) Vendor— Affected before 2.10.0 Fixed in 2.10.0 Patch available GHSA-9q4x-fr4m-jp86

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:commons_vfs:*:*:*:*:*:*:*:*before 2.10.0VulnerableApache
  • cpe:2.3:a:apache:commons_vfs:*:*:*:*:*:*:*:* Versions before 2.10.0 Vulnerable ·Apache

Remediation

  • Fix · CNA Apache Commons VFS (Apache Software Foundation) Fixed in 2.10.0
  • Fix · GHSA-9q4x-fr4m-jp86 org.apache.commons:commons-vfs2 (Maven) Fixed in 2.10.0 Advisory →

Red Hat 1 advisory

  • RHSA-2025:10548 Released 2025-07-08 · Red Hat rating Moderate
    apache-commons-vfs security update
    • 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-examples-2.0-11.el7_9.1 +1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apache Commons VFS 2.10.0

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2025-21774 Apache Commons VFS: Failing to find an FTP file can reveal the URI's password in an error messagePriority LOW 25
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2025:10548

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-27553
  2. 2026-10-03 Alias added: GHSA-9q4x-fr4m-jp86

References

Advisory 3

Other 2

  • TI-2025-21774 Apache Commons VFS: Failing to find an FTP file can reveal the URI's password in an error message CVSS 3.1MEDIUM 5.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences