CVE-2026-25121
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
chainguard.dev/apkoGo | >= 0.14.8, < 1.1.0 | 1.1.0 |
Affected products
11cpe:2.3:a:chainguard:apko:*:*:*:*:*:go:*:*+ 1 more
- cpe:2.3:a:chainguard:apko:*:*:*:*:*:go:*:*range: >=0.14.8,<1.1.1
- (no CPE)range: >= 0.14.8, < 1.1.1
- osv-coords9 versionspkg:apk/chainguard/amazon-ssm-agentpkg:apk/chainguard/amazon-ssm-agent-ecs-execpkg:apk/chainguard/cgpkg:apk/chainguard/chainctlpkg:apk/chainguard/dagdotdevpkg:apk/wolfi/dagdotdevpkg:golang/chainguard.dev/apkopkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2016.0
< 3.3.3270.0-r5+ 8 more
- (no CPE)range: < 3.3.3270.0-r5
- (no CPE)range: < 3.3.3270.0-r5
- (no CPE)range: < 0.2.201-r0
- (no CPE)range: < 0.2.206-r0
- (no CPE)range: < 0.0.20-r6
- (no CPE)range: < 0.0.20-r6
- (no CPE)range: >= 0.14.8, < 1.1.0
- (no CPE)range: < 0.0.20260205T172317-150000.1.146.1
- (no CPE)range: < 0.0.20260723T184607-160000.1.1
Patches
Vulnerability mechanics
References
4- github.com/chainguard-dev/apko/commit/d8b7887a968a527791b3c591ae83928cb49a9f14nvdPatchWEB
- github.com/advisories/GHSA-5g94-c2wx-8pxwghsaADVISORY
- github.com/chainguard-dev/apko/security/advisories/GHSA-5g94-c2wx-8pxwnvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-25121ghsaADVISORY
News mentions
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