← Vulnerability feed

Vulnerability record · CVE-2026-25121 · published 4 February 2026

CVE-2026-25121: Chainguard apko relative path traversal vulnerability

Chainguard · Apko

apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.1, a path traversal vulnerability was discovered in apko's dirFS filesystem abstraction. An attacker who can supply a malicious APK package (e.g., via a compromised or typosquatted repository) could create directories or symlinks outside the intended installation root. The MkdirAll, Mkdir, and Symlink methods in pkg/apk/fs/rwosfs.go use filepath.Join() without validating that the resulting path stays within the base directory. This issue has been patched in version 1.1.1.

7.5 CVSS 3.1 High EPSS 0.39% · top 69.3% CWE-23 · Relative path traversalCWE-22 · Path traversal
7.5CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.1, a path traversal vulnerability was discovered in apko's dirFS filesystem abstraction. An attacker who can supply a malicious APK package (e.g., via a compromised or typosquatted repository) could create directories or symlinks outside the intended installation root. The MkdirAll, Mkdir, and Symlink methods in pkg/apk/fs/rwosfs.go use filepath.Join() without validating that the resulting path stays within the base directory. This issue has been patched in version 1.1.1.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/chainguard-dev/apko/commit/d8b7887a968a527791b3c591ae83928cb49a9f14 Patch
https://github.com/chainguard-dev/apko/security/advisories/GHSA-5g94-c2wx-8pxw Third Party Advisory

Track CVE-2026-25121 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2026-25140Chainguard apko uncontrolled resource consumption vulnerabilityapko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.1, an attacker who controls or…EPSS 0.39%5.5CVE-2026-25122Chainguard apko uncontrolled resource consumption vulnerabilityapko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.0, expandapk.Split drains the …EPSS 0.11%6.7CVE-2026-34926Trend Micro Apex One on-premise server directory traversal enables agent code injectionA relative path traversal (CWE-23) in the Apex One on-premise server lets an attacker who already holds administrative credentials on the server modi…KEVEPSS 0.54%analysed7.3CVE-2024-27199JetBrains TeamCity path traversal enables limited admin actionsJetBrains TeamCity before 2023.11.4 is vulnerable to relative path traversal that lets an unauthenticated remote party perform limited administrative…KEVEPSS 100%analysed9.8CVE-2025-64446FortiWeb relative path traversal allows admin command executionFortiWeb contains a relative path traversal flaw (CWE-23) reachable through crafted HTTP or HTTPS requests. Successful exploitation lets an attacker …KEVEPSS 92%analysed7.5CVE-2020-5410Spring Cloud Config Server path traversal exposes arbitrary filesSpring Cloud Config Server versions 2.2.x before 2.2.3, 2.1.x before 2.1.9, and older unsupported releases serve arbitrary configuration files via th…KEVEPSS 96%analysed9.8CVE-2021-40870Aviatrix Controller unauthenticated file upload leads to RCEAviatrix Controller 6.x before 6.5-1804.1922 allows unrestricted upload of a dangerous file type, and directory traversal lets an unauthenticated att…KEVEPSS 93%analysed

Source: NIST National Vulnerability Database (record CVE-2026-25121), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.