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TI-2026-54427 Aliases CVE-2026-78254GHSA-vjp4-m83c-mp26

Apache Ant: Path traversal in ftp and scp tasks allows arbitrary file write

Priority LOW 35CWE-23Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 11 fixed, 11 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

The ftp and scp tasks of Apache Ant can download files from a remote server. A malicious server can provide relative paths that allow it to write outside of the dedicated target directory for the download, making it possible to overwrite files of the attacker's choice using the permissions of the user running Ant in versions prior to Ant 1.10.18. In order to exploit this vulnerability, the server would either have to be malicious or be subject to a machine-in-the-middle attack. Additionally in the case of scp or the ftp task using ftps the server must pass the server identity checks performed by the tasks. For ftp tasks not using ftps a malicious server could act as a machine-in-the-middle to provide malicious files. Starting with Ant 1.10.18 both tasks will prevent writing outside of the destination directory by default. An option is available to disable this behavior in the unlikely case that the old behavior is required by existing build files. Mitigations: Users of scp and ftp (when using ftps) in any version of Ant should not bypass server identity checks. Users of ftp not using ftps should switch to ftps where possible. All users are recommended to upgrade to Apache Ant 1.10.18, which fixes this issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0052 44th percentileScored 2026-11-07
Fix Partial Apache Ant (Apache Software Foundation): 1.10.18Red Hat: 11 advisoriesRed Hat: 11 fixed, 11 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 Ant1.2 to before 1.10.181.10.18Patch availableCNA
  • Apache Ant VendorApache Affected 1.2 to before 1.10.18 Fixed in 1.10.18 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:ant:*:*:*:*:*:*:*:*before 1.10.18VulnerableApache
  • cpe:2.3:a:apache:ant:*:*:*:*:*:*:*:* Versions before 1.10.18 Vulnerable ·Apache

Remediation

  • Fix · CNA Apache Ant (Apache Software Foundation) Fixed in 1.10.18

Red Hat 11 advisories

  • RHSA-2026:88159 Released 2026-10-22 · Red Hat rating Critical
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.17 security update.
    • OpenShift Developer Tools and Services 4.17 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:88158 Released 2026-10-22 · Red Hat rating Critical
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.19 security update.
    • OpenShift Developer Tools and Services 4.19 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:88157 Released 2026-10-22 · Red Hat rating Critical
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.20 security update.
    • OpenShift Developer Tools and Services 4.20 registry.redhat.io/ocp-tools-4/jenkins-rhel9
Show 8 more Red Hat advisories
  • RHSA-2026:88156 Released 2026-10-22 · Red Hat rating Critical
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.16 security update.
    • OpenShift Developer Tools and Services 4.16 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:88155 Released 2026-10-22 · Red Hat rating Critical
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.21 security update.
    • OpenShift Developer Tools and Services 4.21 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:88154 Released 2026-10-22 · Red Hat rating Critical
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.22 security update.
    • OpenShift Developer Tools and Services 4.22 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:88153 Released 2026-10-22 · Red Hat rating Critical
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.18 security update.
    • OpenShift Developer Tools and Services 4.18 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:88151 Released 2026-10-22 · Red Hat rating Critical
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.14 security update.
    • OpenShift Developer Tools and Services 4.14 registry.redhat.io/ocp-tools-4/jenkins-rhel8
  • RHSA-2026:88152 Released 2026-10-22 · Red Hat rating Critical
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.12 security update.
    • OpenShift Developer Tools and Services 4.12 registry.redhat.io/ocp-tools-4/jenkins-rhel8
  • RHSA-2026:88149 Released 2026-10-22 · Red Hat rating Critical
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.13 security update.
    • OpenShift Developer Tools and Services 4.13 registry.redhat.io/ocp-tools-4/jenkins-rhel8
  • RHSA-2026:88150 Released 2026-10-22 · Red Hat rating Critical
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.15 security update.
    • OpenShift Developer Tools and Services 4.15 registry.redhat.io/ocp-tools-4/jenkins-rhel8

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Migration Toolkit for Applications 8AffectedNo fix yet
OpenShift Developer Tools and ServicesAffectedNo fix yet
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 8Affected—
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat JBoss Web Server 6AffectedNo fix yet: Fix deferred
Red Hat JBoss Web Server 7AffectedNo fix yet: Fix deferred
Red Hat Single Sign-On 7AffectedNo fix planned: Will not fix
Red Hat build of Apicurio Registry 3AffectedNo fix yet
OpenShift Developer Tools and Services 4.12Fixed RHSA-2026:88152
OpenShift Developer Tools and Services 4.13Fixed RHSA-2026:88149
OpenShift Developer Tools and Services 4.14Fixed RHSA-2026:88151
OpenShift Developer Tools and Services 4.15Fixed RHSA-2026:88150
OpenShift Developer Tools and Services 4.16Fixed RHSA-2026:88156
OpenShift Developer Tools and Services 4.17Fixed RHSA-2026:88159
OpenShift Developer Tools and Services 4.18Fixed RHSA-2026:88153
OpenShift Developer Tools and Services 4.19Fixed RHSA-2026:88158
OpenShift Developer Tools and Services 4.20Fixed RHSA-2026:88157
OpenShift Developer Tools and Services 4.21Fixed RHSA-2026:88155
OpenShift Developer Tools and Services 4.22Fixed RHSA-2026:88154
Not affected: 16 products
  • OpenShift Developer Tools and Services 4.12
  • OpenShift Developer Tools and Services 4.13
  • OpenShift Developer Tools and Services 4.14
  • OpenShift Developer Tools and Services 4.15
  • OpenShift Developer Tools and Services 4.16
  • OpenShift Developer Tools and Services 4.17
  • OpenShift Developer Tools and Services 4.18
  • OpenShift Developer Tools and Services 4.19
  • OpenShift Developer Tools and Services 4.20
  • OpenShift Developer Tools and Services 4.21
  • OpenShift Developer Tools and Services 4.22
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Fuse 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-78254
  2. 2026-10-03 Alias added: GHSA-vjp4-m83c-mp26
  3. 2026-10-12 Affected versions changed · Red Hat
  4. 2026-10-16 Affected versions changed · Red Hat
  5. 2026-10-23 Fix available: RHSA-2026:88149 · Red Hat
  6. 2026-10-23 Fix available: RHSA-2026:88152 · Red Hat
  7. 2026-10-23 Fix available: RHSA-2026:88150 · Red Hat
  8. 2026-10-23 Fix available: RHSA-2026:88156 · Red Hat
  9. 2026-10-23 Fix available: RHSA-2026:88153 · Red Hat
  10. 2026-10-23 Fix available: RHSA-2026:88154 · Red Hat
  11. 2026-10-23 Fix available: RHSA-2026:88157 · Red Hat
  12. 2026-10-23 Fix available: RHSA-2026:88155 · Red Hat
  13. 2026-10-23 Fix available: RHSA-2026:88151 · Red Hat
  14. 2026-10-23 Fix available: RHSA-2026:88158 · Red Hat
  15. 2026-10-23 Fix available: RHSA-2026:88159 · Red Hat
  16. 2026-10-23 Fix available: OpenShift Developer Tools and Services 4.12, OpenShift Developer Tools and Services 4.13, OpenShift Developer Tools and Services 4.14 +8 · Red Hat
  17. 2026-10-30 Affected versions changed · Red Hat

References

Advisory 2

  • TI-2020-09639 Injection in Apache Ant CVSS 3.1HIGH 7.5
  • TI-2020-01869 Exposure of resource to wrong sphere in Apache Ant CVSS 3.1MEDIUM 6.3
  • TI-2021-14728 Apache Ant ZIP, and ZIP based, archive denial of service vulerability CVSS 3.1MEDIUM 5.5
  • TI-2021-14727 Apache Ant TAR archive denial of service vulnerability CVSS 3.1MEDIUM 5.5

Sources

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